RequirementCollection::getRecommendations()   A
last analyzed

Complexity

Conditions 3
Paths 3

Size

Total Lines 10
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 3
eloc 5
nc 3
nop 0
dl 0
loc 10
rs 9.4285
c 0
b 0
f 0
1
<?php
2
3
/*
4
 * This file is part of the Symfony package.
5
 *
6
 * (c) Fabien Potencier <[email protected]>
7
 *
8
 * For the full copyright and license information, please view the LICENSE
9
 * file that was distributed with this source code.
10
 */
11
12
/*
13
 * Users of PHP 5.2 should be able to run the requirements checks.
14
 * This is why the file and all classes must be compatible with PHP 5.2+
15
 * (e.g. not using namespaces and closures).
16
 *
17
 * ************** CAUTION **************
18
 *
19
 * DO NOT EDIT THIS FILE as it will be overridden by Composer as part of
20
 * the installation/update process. The original file resides in the
21
 * SensioDistributionBundle.
22
 *
23
 * ************** CAUTION **************
24
 */
25
26
/**
27
 * Represents a single PHP requirement, e.g. an installed extension.
28
 * It can be a mandatory requirement or an optional recommendation.
29
 * There is a special subclass, named PhpIniRequirement, to check a php.ini configuration.
30
 *
31
 * @author Tobias Schultze <http://tobion.de>
32
 */
33
class Requirement
34
{
35
    private $fulfilled;
36
    private $testMessage;
37
    private $helpText;
38
    private $helpHtml;
39
    private $optional;
40
41
    /**
42
     * Constructor that initializes the requirement.
43
     *
44
     * @param bool        $fulfilled   Whether the requirement is fulfilled
45
     * @param string      $testMessage The message for testing the requirement
46
     * @param string      $helpHtml    The help text formatted in HTML for resolving the problem
47
     * @param string|null $helpText    The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
48
     * @param bool        $optional    Whether this is only an optional recommendation not a mandatory requirement
49
     */
50
    public function __construct($fulfilled, $testMessage, $helpHtml, $helpText = null, $optional = false)
51
    {
52
        $this->fulfilled = (bool) $fulfilled;
53
        $this->testMessage = (string) $testMessage;
54
        $this->helpHtml = (string) $helpHtml;
55
        $this->helpText = null === $helpText ? strip_tags($this->helpHtml) : (string) $helpText;
56
        $this->optional = (bool) $optional;
57
    }
58
59
    /**
60
     * Returns whether the requirement is fulfilled.
61
     *
62
     * @return bool true if fulfilled, otherwise false
63
     */
64
    public function isFulfilled()
65
    {
66
        return $this->fulfilled;
67
    }
68
69
    /**
70
     * Returns the message for testing the requirement.
71
     *
72
     * @return string The test message
73
     */
74
    public function getTestMessage()
75
    {
76
        return $this->testMessage;
77
    }
78
79
    /**
80
     * Returns the help text for resolving the problem.
81
     *
82
     * @return string The help text
83
     */
84
    public function getHelpText()
85
    {
86
        return $this->helpText;
87
    }
88
89
    /**
90
     * Returns the help text formatted in HTML.
91
     *
92
     * @return string The HTML help
93
     */
94
    public function getHelpHtml()
95
    {
96
        return $this->helpHtml;
97
    }
98
99
    /**
100
     * Returns whether this is only an optional recommendation and not a mandatory requirement.
101
     *
102
     * @return bool true if optional, false if mandatory
103
     */
104
    public function isOptional()
105
    {
106
        return $this->optional;
107
    }
108
}
109
110
/**
111
 * Represents a PHP requirement in form of a php.ini configuration.
112
 *
113
 * @author Tobias Schultze <http://tobion.de>
114
 */
115
class PhpIniRequirement extends Requirement
116
{
117
    /**
118
     * Constructor that initializes the requirement.
119
     *
120
     * @param string        $cfgName           The configuration name used for ini_get()
121
     * @param bool|callback $evaluation        Either a boolean indicating whether the configuration should evaluate to true or false,
122
     *                                         or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement
123
     * @param bool          $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false.
124
     *                                         This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin.
125
     *                                         Example: You require a config to be true but PHP later removes this config and defaults it to true internally.
126
     * @param string|null   $testMessage       The message for testing the requirement (when null and $evaluation is a boolean a default message is derived)
127
     * @param string|null   $helpHtml          The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived)
128
     * @param string|null   $helpText          The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
129
     * @param bool          $optional          Whether this is only an optional recommendation not a mandatory requirement
130
     */
131
    public function __construct($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null, $optional = false)
132
    {
133
        $cfgValue = ini_get($cfgName);
134
135
        if (is_callable($evaluation)) {
136
            if (null === $testMessage || null === $helpHtml) {
137
                throw new InvalidArgumentException('You must provide the parameters testMessage and helpHtml for a callback evaluation.');
138
            }
139
140
            $fulfilled = call_user_func($evaluation, $cfgValue);
0 ignored issues
show
Bug introduced by
It seems like $evaluation can also be of type boolean; however, parameter $function of call_user_func() does only seem to accept callable, maybe add an additional type check? ( Ignorable by Annotation )

If this is a false-positive, you can also ignore this issue in your code via the ignore-type  annotation

140
            $fulfilled = call_user_func(/** @scrutinizer ignore-type */ $evaluation, $cfgValue);
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141
        } else {
142
            if (null === $testMessage) {
143
                $testMessage = sprintf('%s %s be %s in php.ini',
144
                    $cfgName,
145
                    $optional ? 'should' : 'must',
146
                    $evaluation ? 'enabled' : 'disabled'
147
                );
148
            }
149
150
            if (null === $helpHtml) {
151
                $helpHtml = sprintf('Set <strong>%s</strong> to <strong>%s</strong> in php.ini<a href="#phpini">*</a>.',
152
                    $cfgName,
153
                    $evaluation ? 'on' : 'off'
154
                );
155
            }
156
157
            $fulfilled = $evaluation == $cfgValue;
158
        }
159
160
        parent::__construct($fulfilled || ($approveCfgAbsence && false === $cfgValue), $testMessage, $helpHtml, $helpText, $optional);
161
    }
162
}
163
164
/**
165
 * A RequirementCollection represents a set of Requirement instances.
166
 *
167
 * @author Tobias Schultze <http://tobion.de>
168
 */
169
class RequirementCollection implements IteratorAggregate
170
{
171
    private $requirements = array();
172
173
    /**
174
     * Gets the current RequirementCollection as an Iterator.
175
     *
176
     * @return Traversable A Traversable interface
177
     */
178
    public function getIterator()
179
    {
180
        return new ArrayIterator($this->requirements);
181
    }
182
183
    /**
184
     * Adds a Requirement.
185
     *
186
     * @param Requirement $requirement A Requirement instance
187
     */
188
    public function add(Requirement $requirement)
189
    {
190
        $this->requirements[] = $requirement;
191
    }
192
193
    /**
194
     * Adds a mandatory requirement.
195
     *
196
     * @param bool        $fulfilled   Whether the requirement is fulfilled
197
     * @param string      $testMessage The message for testing the requirement
198
     * @param string      $helpHtml    The help text formatted in HTML for resolving the problem
199
     * @param string|null $helpText    The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
200
     */
201
    public function addRequirement($fulfilled, $testMessage, $helpHtml, $helpText = null)
202
    {
203
        $this->add(new Requirement($fulfilled, $testMessage, $helpHtml, $helpText, false));
204
    }
205
206
    /**
207
     * Adds an optional recommendation.
208
     *
209
     * @param bool        $fulfilled   Whether the recommendation is fulfilled
210
     * @param string      $testMessage The message for testing the recommendation
211
     * @param string      $helpHtml    The help text formatted in HTML for resolving the problem
212
     * @param string|null $helpText    The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
213
     */
214
    public function addRecommendation($fulfilled, $testMessage, $helpHtml, $helpText = null)
215
    {
216
        $this->add(new Requirement($fulfilled, $testMessage, $helpHtml, $helpText, true));
217
    }
218
219
    /**
220
     * Adds a mandatory requirement in form of a php.ini configuration.
221
     *
222
     * @param string        $cfgName           The configuration name used for ini_get()
223
     * @param bool|callback $evaluation        Either a boolean indicating whether the configuration should evaluate to true or false,
224
     *                                         or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement
225
     * @param bool          $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false.
226
     *                                         This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin.
227
     *                                         Example: You require a config to be true but PHP later removes this config and defaults it to true internally.
228
     * @param string        $testMessage       The message for testing the requirement (when null and $evaluation is a boolean a default message is derived)
229
     * @param string        $helpHtml          The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived)
230
     * @param string|null   $helpText          The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
231
     */
232
    public function addPhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null)
233
    {
234
        $this->add(new PhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence, $testMessage, $helpHtml, $helpText, false));
235
    }
236
237
    /**
238
     * Adds an optional recommendation in form of a php.ini configuration.
239
     *
240
     * @param string        $cfgName           The configuration name used for ini_get()
241
     * @param bool|callback $evaluation        Either a boolean indicating whether the configuration should evaluate to true or false,
242
     *                                         or a callback function receiving the configuration value as parameter to determine the fulfillment of the requirement
243
     * @param bool          $approveCfgAbsence If true the Requirement will be fulfilled even if the configuration option does not exist, i.e. ini_get() returns false.
244
     *                                         This is helpful for abandoned configs in later PHP versions or configs of an optional extension, like Suhosin.
245
     *                                         Example: You require a config to be true but PHP later removes this config and defaults it to true internally.
246
     * @param string        $testMessage       The message for testing the requirement (when null and $evaluation is a boolean a default message is derived)
247
     * @param string        $helpHtml          The help text formatted in HTML for resolving the problem (when null and $evaluation is a boolean a default help is derived)
248
     * @param string|null   $helpText          The help text (when null, it will be inferred from $helpHtml, i.e. stripped from HTML tags)
249
     */
250
    public function addPhpIniRecommendation($cfgName, $evaluation, $approveCfgAbsence = false, $testMessage = null, $helpHtml = null, $helpText = null)
251
    {
252
        $this->add(new PhpIniRequirement($cfgName, $evaluation, $approveCfgAbsence, $testMessage, $helpHtml, $helpText, true));
253
    }
254
255
    /**
256
     * Adds a requirement collection to the current set of requirements.
257
     *
258
     * @param RequirementCollection $collection A RequirementCollection instance
259
     */
260
    public function addCollection(RequirementCollection $collection)
261
    {
262
        $this->requirements = array_merge($this->requirements, $collection->all());
263
    }
264
265
    /**
266
     * Returns both requirements and recommendations.
267
     *
268
     * @return array Array of Requirement instances
269
     */
270
    public function all()
271
    {
272
        return $this->requirements;
273
    }
274
275
    /**
276
     * Returns all mandatory requirements.
277
     *
278
     * @return array Array of Requirement instances
279
     */
280
    public function getRequirements()
281
    {
282
        $array = array();
283
        foreach ($this->requirements as $req) {
284
            if (!$req->isOptional()) {
285
                $array[] = $req;
286
            }
287
        }
288
289
        return $array;
290
    }
291
292
    /**
293
     * Returns the mandatory requirements that were not met.
294
     *
295
     * @return array Array of Requirement instances
296
     */
297
    public function getFailedRequirements()
298
    {
299
        $array = array();
300
        foreach ($this->requirements as $req) {
301
            if (!$req->isFulfilled() && !$req->isOptional()) {
302
                $array[] = $req;
303
            }
304
        }
305
306
        return $array;
307
    }
308
309
    /**
310
     * Returns all optional recommendations.
311
     *
312
     * @return array Array of Requirement instances
313
     */
314
    public function getRecommendations()
315
    {
316
        $array = array();
317
        foreach ($this->requirements as $req) {
318
            if ($req->isOptional()) {
319
                $array[] = $req;
320
            }
321
        }
322
323
        return $array;
324
    }
325
326
    /**
327
     * Returns the recommendations that were not met.
328
     *
329
     * @return array Array of Requirement instances
330
     */
331
    public function getFailedRecommendations()
332
    {
333
        $array = array();
334
        foreach ($this->requirements as $req) {
335
            if (!$req->isFulfilled() && $req->isOptional()) {
336
                $array[] = $req;
337
            }
338
        }
339
340
        return $array;
341
    }
342
343
    /**
344
     * Returns whether a php.ini configuration is not correct.
345
     *
346
     * @return bool php.ini configuration problem?
347
     */
348
    public function hasPhpIniConfigIssue()
349
    {
350
        foreach ($this->requirements as $req) {
351
            if (!$req->isFulfilled() && $req instanceof PhpIniRequirement) {
352
                return true;
353
            }
354
        }
355
356
        return false;
357
    }
358
359
    /**
360
     * Returns the PHP configuration file (php.ini) path.
361
     *
362
     * @return string|false php.ini file path
363
     */
364
    public function getPhpIniConfigPath()
365
    {
366
        return get_cfg_var('cfg_file_path');
367
    }
368
}
369
370
/**
371
 * This class specifies all requirements and optional recommendations that
372
 * are necessary to run the Symfony Standard Edition.
373
 *
374
 * @author Tobias Schultze <http://tobion.de>
375
 * @author Fabien Potencier <[email protected]>
376
 */
377
class SymfonyRequirements extends RequirementCollection
378
{
379
    const REQUIRED_PHP_VERSION = '5.3.3';
380
381
    /**
382
     * Constructor that initializes the requirements.
383
     */
384
    public function __construct()
385
    {
386
        /* mandatory requirements follow */
387
388
        $installedPhpVersion = phpversion();
389
390
        $this->addRequirement(
391
            version_compare($installedPhpVersion, self::REQUIRED_PHP_VERSION, '>='),
392
            sprintf('PHP version must be at least %s (%s installed)', self::REQUIRED_PHP_VERSION, $installedPhpVersion),
393
            sprintf('You are running PHP version "<strong>%s</strong>", but Symfony needs at least PHP "<strong>%s</strong>" to run.
394
                Before using Symfony, upgrade your PHP installation, preferably to the latest version.',
395
                $installedPhpVersion, self::REQUIRED_PHP_VERSION),
396
            sprintf('Install PHP %s or newer (installed version is %s)', self::REQUIRED_PHP_VERSION, $installedPhpVersion)
397
        );
398
399
        $this->addRequirement(
400
            version_compare($installedPhpVersion, '5.3.16', '!='),
401
            'PHP version must not be 5.3.16 as Symfony won\'t work properly with it',
402
            'Install PHP 5.3.17 or newer (or downgrade to an earlier PHP version)'
403
        );
404
405
        $this->addRequirement(
406
            is_dir(__DIR__.'/../vendor/composer'),
407
            'Vendor libraries must be installed',
408
            'Vendor libraries are missing. Install composer following instructions from <a href="http://getcomposer.org/">http://getcomposer.org/</a>. '.
409
                'Then run "<strong>php composer.phar install</strong>" to install them.'
410
        );
411
412
        $cacheDir = is_dir(__DIR__.'/../var/cache') ? __DIR__.'/../var/cache' : __DIR__.'/cache';
413
414
        $this->addRequirement(
415
            is_writable($cacheDir),
416
            'app/cache/ or var/cache/ directory must be writable',
417
            'Change the permissions of either "<strong>app/cache/</strong>" or  "<strong>var/cache/</strong>" directory so that the web server can write into it.'
418
        );
419
420
        $logsDir = is_dir(__DIR__.'/../var/logs') ? __DIR__.'/../var/logs' : __DIR__.'/logs';
421
422
        $this->addRequirement(
423
            is_writable($logsDir),
424
            'app/logs/ or var/logs/ directory must be writable',
425
            'Change the permissions of either "<strong>app/logs/</strong>" or  "<strong>var/logs/</strong>" directory so that the web server can write into it.'
426
        );
427
428
        $this->addPhpIniRequirement(
429
            'date.timezone', true, false,
430
            'date.timezone setting must be set',
431
            'Set the "<strong>date.timezone</strong>" setting in php.ini<a href="#phpini">*</a> (like Europe/Paris).'
432
        );
433
434
        if (version_compare($installedPhpVersion, self::REQUIRED_PHP_VERSION, '>=')) {
435
            $timezones = array();
436
            foreach (DateTimeZone::listAbbreviations() as $abbreviations) {
437
                foreach ($abbreviations as $abbreviation) {
438
                    $timezones[$abbreviation['timezone_id']] = true;
439
                }
440
            }
441
442
            $this->addRequirement(
443
                isset($timezones[@date_default_timezone_get()]),
444
                sprintf('Configured default timezone "%s" must be supported by your installation of PHP', @date_default_timezone_get()),
445
                'Your default timezone is not supported by PHP. Check for typos in your <strong>php.ini</strong> file and have a look at the list of deprecated timezones at <a href="http://php.net/manual/en/timezones.others.php">http://php.net/manual/en/timezones.others.php</a>.'
446
            );
447
        }
448
449
        $this->addRequirement(
450
            function_exists('iconv'),
451
            'iconv() must be available',
452
            'Install and enable the <strong>iconv</strong> extension.'
453
        );
454
455
        $this->addRequirement(
456
            function_exists('json_encode'),
457
            'json_encode() must be available',
458
            'Install and enable the <strong>JSON</strong> extension.'
459
        );
460
461
        $this->addRequirement(
462
            function_exists('session_start'),
463
            'session_start() must be available',
464
            'Install and enable the <strong>session</strong> extension.'
465
        );
466
467
        $this->addRequirement(
468
            function_exists('ctype_alpha'),
469
            'ctype_alpha() must be available',
470
            'Install and enable the <strong>ctype</strong> extension.'
471
        );
472
473
        $this->addRequirement(
474
            function_exists('token_get_all'),
475
            'token_get_all() must be available',
476
            'Install and enable the <strong>Tokenizer</strong> extension.'
477
        );
478
479
        $this->addRequirement(
480
            function_exists('simplexml_import_dom'),
481
            'simplexml_import_dom() must be available',
482
            'Install and enable the <strong>SimpleXML</strong> extension.'
483
        );
484
485
        if (function_exists('apc_store') && ini_get('apc.enabled')) {
486
            if (version_compare($installedPhpVersion, '5.4.0', '>=')) {
487
                $this->addRequirement(
488
                    version_compare(phpversion('apc'), '3.1.13', '>='),
489
                    'APC version must be at least 3.1.13 when using PHP 5.4',
490
                    'Upgrade your <strong>APC</strong> extension (3.1.13+).'
491
                );
492
            } else {
493
                $this->addRequirement(
494
                    version_compare(phpversion('apc'), '3.0.17', '>='),
495
                    'APC version must be at least 3.0.17',
496
                    'Upgrade your <strong>APC</strong> extension (3.0.17+).'
497
                );
498
            }
499
        }
500
501
        $this->addPhpIniRequirement('detect_unicode', false);
502
503
        if (extension_loaded('suhosin')) {
504
            $this->addPhpIniRequirement(
505
                'suhosin.executor.include.whitelist',
506
                create_function('$cfgValue', 'return false !== stripos($cfgValue, "phar");'),
507
                false,
508
                'suhosin.executor.include.whitelist must be configured correctly in php.ini',
509
                'Add "<strong>phar</strong>" to <strong>suhosin.executor.include.whitelist</strong> in php.ini<a href="#phpini">*</a>.'
510
            );
511
        }
512
513
        if (extension_loaded('xdebug')) {
514
            $this->addPhpIniRequirement(
515
                'xdebug.show_exception_trace', false, true
516
            );
517
518
            $this->addPhpIniRequirement(
519
                'xdebug.scream', false, true
520
            );
521
522
            $this->addPhpIniRecommendation(
523
                'xdebug.max_nesting_level',
524
                create_function('$cfgValue', 'return $cfgValue > 100;'),
525
                true,
526
                'xdebug.max_nesting_level should be above 100 in php.ini',
527
                'Set "<strong>xdebug.max_nesting_level</strong>" to e.g. "<strong>250</strong>" in php.ini<a href="#phpini">*</a> to stop Xdebug\'s infinite recursion protection erroneously throwing a fatal error in your project.'
528
            );
529
        }
530
531
        $pcreVersion = defined('PCRE_VERSION') ? (float) PCRE_VERSION : null;
532
533
        $this->addRequirement(
534
            null !== $pcreVersion,
535
            'PCRE extension must be available',
536
            'Install the <strong>PCRE</strong> extension (version 8.0+).'
537
        );
538
539
        if (extension_loaded('mbstring')) {
540
            $this->addPhpIniRequirement(
541
                'mbstring.func_overload',
542
                create_function('$cfgValue', 'return (int) $cfgValue === 0;'),
543
                true,
544
                'string functions should not be overloaded',
545
                'Set "<strong>mbstring.func_overload</strong>" to <strong>0</strong> in php.ini<a href="#phpini">*</a> to disable function overloading by the mbstring extension.'
546
            );
547
        }
548
549
        /* optional recommendations follow */
550
551
        if (file_exists(__DIR__.'/../vendor/composer')) {
552
            require_once __DIR__.'/../vendor/autoload.php';
553
554
            try {
555
                $r = new ReflectionClass('Sensio\Bundle\DistributionBundle\SensioDistributionBundle');
556
557
                $contents = file_get_contents(dirname($r->getFileName()).'/Resources/skeleton/app/SymfonyRequirements.php');
558
            } catch (ReflectionException $e) {
559
                $contents = '';
560
            }
561
            $this->addRecommendation(
562
                file_get_contents(__FILE__) === $contents,
563
                'Requirements file should be up-to-date',
564
                'Your requirements file is outdated. Run composer install and re-check your configuration.'
565
            );
566
        }
567
568
        $this->addRecommendation(
569
            version_compare($installedPhpVersion, '5.3.4', '>='),
570
            'You should use at least PHP 5.3.4 due to PHP bug #52083 in earlier versions',
571
            'Your project might malfunction randomly due to PHP bug #52083 ("Notice: Trying to get property of non-object"). Install PHP 5.3.4 or newer.'
572
        );
573
574
        $this->addRecommendation(
575
            version_compare($installedPhpVersion, '5.3.8', '>='),
576
            'When using annotations you should have at least PHP 5.3.8 due to PHP bug #55156',
577
            'Install PHP 5.3.8 or newer if your project uses annotations.'
578
        );
579
580
        $this->addRecommendation(
581
            version_compare($installedPhpVersion, '5.4.0', '!='),
582
            'You should not use PHP 5.4.0 due to the PHP bug #61453',
583
            'Your project might not work properly due to the PHP bug #61453 ("Cannot dump definitions which have method calls"). Install PHP 5.4.1 or newer.'
584
        );
585
586
        $this->addRecommendation(
587
            version_compare($installedPhpVersion, '5.4.11', '>='),
588
            'When using the logout handler from the Symfony Security Component, you should have at least PHP 5.4.11 due to PHP bug #63379 (as a workaround, you can also set invalidate_session to false in the security logout handler configuration)',
589
            'Install PHP 5.4.11 or newer if your project uses the logout handler from the Symfony Security Component.'
590
        );
591
592
        $this->addRecommendation(
593
            (version_compare($installedPhpVersion, '5.3.18', '>=') && version_compare($installedPhpVersion, '5.4.0', '<'))
594
            ||
595
            version_compare($installedPhpVersion, '5.4.8', '>='),
596
            'You should use PHP 5.3.18+ or PHP 5.4.8+ to always get nice error messages for fatal errors in the development environment due to PHP bug #61767/#60909',
597
            'Install PHP 5.3.18+ or PHP 5.4.8+ if you want nice error messages for all fatal errors in the development environment.'
598
        );
599
600
        if (null !== $pcreVersion) {
601
            $this->addRecommendation(
602
                $pcreVersion >= 8.0,
603
                sprintf('PCRE extension should be at least version 8.0 (%s installed)', $pcreVersion),
604
                '<strong>PCRE 8.0+</strong> is preconfigured in PHP since 5.3.2 but you are using an outdated version of it. Symfony probably works anyway but it is recommended to upgrade your PCRE extension.'
605
            );
606
        }
607
608
        $this->addRecommendation(
609
            class_exists('DomDocument'),
610
            'PHP-DOM and PHP-XML modules should be installed',
611
            'Install and enable the <strong>PHP-DOM</strong> and the <strong>PHP-XML</strong> modules.'
612
        );
613
614
        $this->addRecommendation(
615
            function_exists('mb_strlen'),
616
            'mb_strlen() should be available',
617
            'Install and enable the <strong>mbstring</strong> extension.'
618
        );
619
620
        $this->addRecommendation(
621
            function_exists('iconv'),
622
            'iconv() should be available',
623
            'Install and enable the <strong>iconv</strong> extension.'
624
        );
625
626
        $this->addRecommendation(
627
            function_exists('utf8_decode'),
628
            'utf8_decode() should be available',
629
            'Install and enable the <strong>XML</strong> extension.'
630
        );
631
632
        $this->addRecommendation(
633
            function_exists('filter_var'),
634
            'filter_var() should be available',
635
            'Install and enable the <strong>filter</strong> extension.'
636
        );
637
638
        if (!defined('PHP_WINDOWS_VERSION_BUILD')) {
639
            $this->addRecommendation(
640
                function_exists('posix_isatty'),
641
                'posix_isatty() should be available',
642
                'Install and enable the <strong>php_posix</strong> extension (used to colorize the CLI output).'
643
            );
644
        }
645
646
        $this->addRecommendation(
647
            extension_loaded('intl'),
648
            'intl extension should be available',
649
            'Install and enable the <strong>intl</strong> extension (used for validators).'
650
        );
651
652
        if (extension_loaded('intl')) {
653
            // in some WAMP server installations, new Collator() returns null
654
            $this->addRecommendation(
655
                null !== new Collator('fr_FR'),
656
                'intl extension should be correctly configured',
657
                'The intl extension does not behave properly. This problem is typical on PHP 5.3.X x64 WIN builds.'
658
            );
659
660
            // check for compatible ICU versions (only done when you have the intl extension)
661
            if (defined('INTL_ICU_VERSION')) {
662
                $version = INTL_ICU_VERSION;
663
            } else {
664
                $reflector = new ReflectionExtension('intl');
665
666
                ob_start();
667
                $reflector->info();
668
                $output = strip_tags(ob_get_clean());
669
670
                preg_match('/^ICU version +(?:=> )?(.*)$/m', $output, $matches);
671
                $version = $matches[1];
672
            }
673
674
            $this->addRecommendation(
675
                version_compare($version, '4.0', '>='),
676
                'intl ICU version should be at least 4+',
677
                'Upgrade your <strong>intl</strong> extension with a newer ICU version (4+).'
678
            );
679
680
            $this->addPhpIniRecommendation(
681
                'intl.error_level',
682
                create_function('$cfgValue', 'return (int) $cfgValue === 0;'),
683
                true,
684
                'intl.error_level should be 0 in php.ini',
685
                'Set "<strong>intl.error_level</strong>" to "<strong>0</strong>" in php.ini<a href="#phpini">*</a> to inhibit the messages when an error occurs in ICU functions.'
686
            );
687
        }
688
689
        $accelerator =
690
            (extension_loaded('eaccelerator') && ini_get('eaccelerator.enable'))
691
            ||
692
            (extension_loaded('apc') && ini_get('apc.enabled'))
693
            ||
694
            (extension_loaded('Zend Optimizer+') && ini_get('zend_optimizerplus.enable'))
695
            ||
696
            (extension_loaded('Zend OPcache') && ini_get('opcache.enable'))
697
            ||
698
            (extension_loaded('xcache') && ini_get('xcache.cacher'))
699
            ||
700
            (extension_loaded('wincache') && ini_get('wincache.ocenabled'))
701
        ;
702
703
        $this->addRecommendation(
704
            $accelerator,
705
            'a PHP accelerator should be installed',
706
            'Install and/or enable a <strong>PHP accelerator</strong> (highly recommended).'
707
        );
708
709
        if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
710
            $this->addRecommendation(
711
                $this->getRealpathCacheSize() > 1000,
712
                'realpath_cache_size should be above 1024 in php.ini',
713
                'Set "<strong>realpath_cache_size</strong>" to e.g. "<strong>1024</strong>" in php.ini<a href="#phpini">*</a> to improve performance on windows.'
714
            );
715
        }
716
717
        $this->addPhpIniRecommendation('short_open_tag', false);
718
719
        $this->addPhpIniRecommendation('magic_quotes_gpc', false, true);
720
721
        $this->addPhpIniRecommendation('register_globals', false, true);
722
723
        $this->addPhpIniRecommendation('session.auto_start', false);
724
725
        $this->addRecommendation(
726
            class_exists('PDO'),
727
            'PDO should be installed',
728
            'Install <strong>PDO</strong> (mandatory for Doctrine).'
729
        );
730
731
        if (class_exists('PDO')) {
732
            $drivers = PDO::getAvailableDrivers();
733
            $this->addRecommendation(
734
                count($drivers) > 0,
735
                sprintf('PDO should have some drivers installed (currently available: %s)', count($drivers) ? implode(', ', $drivers) : 'none'),
736
                'Install <strong>PDO drivers</strong> (mandatory for Doctrine).'
737
            );
738
        }
739
    }
740
741
    /**
742
     * Loads realpath_cache_size from php.ini and converts it to int.
743
     *
744
     * (e.g. 16k is converted to 16384 int)
745
     *
746
     * @return int
747
     */
748
    protected function getRealpathCacheSize()
749
    {
750
        $size = ini_get('realpath_cache_size');
751
        $size = trim($size);
752
        $unit = strtolower(substr($size, -1, 1));
753
        switch ($unit) {
754
            case 'g':
755
                return $size * 1024 * 1024 * 1024;
756
            case 'm':
757
                return $size * 1024 * 1024;
758
            case 'k':
759
                return $size * 1024;
760
            default:
761
                return (int) $size;
762
        }
763
    }
764
}
765