autoptimizeUtils::substr_replace() - Code Metrics - Inspection of "bringing code tools to master" - futtta/autoptimize - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 6ec0d0...df0500 )

by frank

created 2018-10-07 16:49 UTC

autoptimizeUtils::substr_replace() C

↳ Parent: autoptimizeUtils

Complexity

Conditions	15
Paths	130

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	15
nc	130
nop	5
dl	0
loc	39
rs	5.6666
c	0
b	0
f	0

How to fix Complexity

<?php
/**
 * General helpers.
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

class autoptimizeUtils
{
    /**
     * Returns true when mbstring is available.
     *
     * @param bool|null $override Allows overriding the decision.
     *
     * @return bool
     */
    public static function mbstring_available( $override = null )
    {
        static $available = null;

        if ( null === $available ) {
            $available = \extension_loaded( 'mbstring' );
        }

        if ( null !== $override ) {
            $available = $override;
        }

        return $available;
    }

    /**
     * Multibyte-capable strpos() if support is available on the server.
     * If not, it falls back to using \strpos().
     *
     * @param string      $haystack Haystack.
     * @param string      $needle   Needle.
     * @param int         $offset   Offset.
     * @param string|null $encoding Encoding. Default null.
     *
     * @return int|false
     */
    public static function strpos( $haystack, $needle, $offset = 0, $encoding = null )
    {
        if ( self::mbstring_available() ) {
            return ( null === $encoding ) ? \mb_strpos( $haystack, $needle, $offset ) : \mb_strlen( $haystack, $needle, $offset, $encoding );
        } else {
            return \strpos( $haystack, $needle, $offset );
        }
    }

    /**
     * Attempts to return the number of characters in the given $string if
     * mbstring is available. Returns the number of bytes
     * (instead of characters) as fallback.
     *
     * @param string      $string   String.
     * @param string|null $encoding Encoding.
     *
     * @return int Number of charcters or bytes in given $string
     *             (characters if/when supported, bytes otherwise).
     */
    public static function strlen( $string, $encoding = null )
    {
        if ( self::mbstring_available() ) {
            return ( null === $encoding ) ? \mb_strlen( $string ) : \mb_strlen( $string, $encoding );
        } else {
            return \strlen( $string );
        }
    }

    /**
     * Our wrapper around implementations of \substr_replace()
     * that attempts to not break things horribly if at all possible.
     * Uses mbstring if available, before falling back to regular
     * substr_replace() (which works just fine in the majority of cases).
     *
     * @param string      $string      String.
     * @param string      $replacement Replacement.
     * @param int         $start       Start offset.
     * @param int|null    $length      Length.
     * @param string|null $encoding    Encoding.
     *
     * @return string
     */
    public static function substr_replace( $string, $replacement, $start, $length = null, $encoding = null )
    {
        if ( self::mbstring_available() ) {
            $strlen = self::strlen( $string, $encoding );

            if ( $start < 0 ) {
                if ( -$start < $strlen ) {
                    $start = $strlen + $start;
                } else {
                    $start = 0;
                }
            } elseif ( $start > $strlen ) {
                $start = $strlen;
            }

            if ( null === $length || '' === $length ) {

                $start2 = $strlen;
            } elseif ( $length < 0 ) {
                $start2 = $strlen + $length;
                if ( $start2 < $start ) {
                    $start2 = $start;
                }
            } else {
                $start2 = $start + $length;
            }

            if ( null === $encoding ) {
                $leader  = $start ? \mb_substr( $string, 0, $start ) : '';
                $trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null ) : '';
            } else {
                $leader  = $start ? \mb_substr( $string, 0, $start, $encoding ) : '';
                $trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null, $encoding ) : '';
            }

            return "{$leader}{$replacement}{$trailer}";
        }

        return ( null === $length ) ? \substr_replace( $string, $replacement, $start ) : \substr_replace( $string, $replacement, $start, $length );
    }

    /**
     * Decides whether this is a "subdirectory site" or not.
     *
     * @param bool $override Allows overriding the decision when needed.
     *
     * @return bool
     */
    public static function siteurl_not_root( $override = null )
    {
        static $subdir = null;

        if ( null === $subdir ) {
            $parts  = self::get_ao_wp_site_url_parts();
            $subdir = ( isset( $parts['path'] ) && ( '/' !== $parts['path'] ) );
        }

        if ( null !== $override ) {
            $subdir = $override;
        }

        return $subdir;
    }

    /**
     * Parse AUTOPTIMIZE_WP_SITE_URL into components using \parse_url(), but do
     * so only once per request/lifecycle.
     *
     * @return array
     */
    public static function get_ao_wp_site_url_parts()
    {
        static $parts = array();

        if ( empty( $parts ) ) {
            $parts = \parse_url( AUTOPTIMIZE_WP_SITE_URL );
        }

        return $parts;
    }

    /**
     * Modify given $cdn_url to include the site path when needed.
     *
     * @param string $cdn_url          CDN URL to tweak.
     * @param bool   $force_cache_miss Force a cache miss in order to be able
     *                                 to re-run the filter.
     *
     * @return string
     */
    public static function tweak_cdn_url_if_needed( $cdn_url, $force_cache_miss = false )
    {
        static $results = array();

        if ( ! isset( $results[ $cdn_url ] ) || $force_cache_miss ) {

            // In order to return unmodified input when there's no need to tweak.
            $results[ $cdn_url ] = $cdn_url;

            // Behind a default true filter for backcompat, and only for sites
            // in a subfolder/subdirectory, but still easily turned off if
            // not wanted/needed...
            if ( autoptimizeUtils::siteurl_not_root() ) {
                $check = apply_filters( 'autoptimize_filter_cdn_magic_path_check', true, $cdn_url );
                if ( $check ) {
                    $site_url_parts = autoptimizeUtils::get_ao_wp_site_url_parts();
                    $cdn_url_parts  = \parse_url( $cdn_url );
                    $schemeless     = self::is_protocol_relative( $cdn_url );
                    $cdn_url_parts  = self::maybe_replace_cdn_path( $site_url_parts, $cdn_url_parts );
<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}
                    if ( false !== $cdn_url_parts ) {
                        $results[ $cdn_url ] = self::assemble_parsed_url( $cdn_url_parts, $schemeless );
                    }
                }
            }
        }

        return $results[ $cdn_url ];
    }

    /**
     * When siteurl contans a path other than '/' and the CDN URL does not have
     * a path or it's path is '/', this will modify the CDN URL's path component
     * to match that of the siteurl.
     * This is to support "magic" CDN urls that worked that way before v2.4...
     *
     * @param array $site_url_parts Site URL components array.
     * @param array $cdn_url_parts  CDN URL components array.
     *
     * @return array|false
     */
    public static function maybe_replace_cdn_path( array $site_url_parts, array $cdn_url_parts )
    {
        if ( isset( $site_url_parts['path'] ) && '/' !== $site_url_parts['path'] ) {
            if ( ! isset( $cdn_url_parts['path'] ) || '/' === $cdn_url_parts['path'] ) {
                $cdn_url_parts['path'] = $site_url_parts['path'];
                return $cdn_url_parts;
            }
        }

        return false;
    }

    /**
     * Given an array or components returned from \parse_url(), assembles back
     * the complete URL.
     * If optional
     *
     * @param array $parsed_url URL components array.
     * @param bool  $schemeless Whether the assembled URL should be
     *                          protocol-relative (schemeless) or not.
     *
     * @return string
     */
    public static function assemble_parsed_url( array $parsed_url, $schemeless = false )
    {
        $scheme = isset( $parsed_url['scheme'] ) ? $parsed_url['scheme'] . '://' : '';
        if ( $schemeless ) {
            $scheme = '//';
        }
        $host     = isset( $parsed_url['host'] ) ? $parsed_url['host'] : '';
        $port     = isset( $parsed_url['port'] ) ? ':' . $parsed_url['port'] : '';
        $user     = isset( $parsed_url['user'] ) ? $parsed_url['user'] : '';
        $pass     = isset( $parsed_url['pass'] ) ? ':' . $parsed_url['pass'] : '';
        $pass     = ( $user || $pass ) ? "$pass@" : '';
        $path     = isset( $parsed_url['path'] ) ? $parsed_url['path'] : '';
        $query    = isset( $parsed_url['query'] ) ? '?' . $parsed_url['query'] : '';
        $fragment = isset( $parsed_url['fragment'] ) ? '#' . $parsed_url['fragment'] : '';

        return "$scheme$user$pass$host$port$path$query$fragment";
    }

    /**
     * Returns true if given $url is protocol-relative.
     *
     * @param string $url URL to check.
     *
     * @return bool
     */
    public static function is_protocol_relative( $url )
    {
        $result = false;

        if ( ! empty( $url ) ) {
            $result = ( '/' === $url{1} ); // second char is `/`.
        }

        return $result;
    }

    /**
     * Canonicalizes the given path regardless of it existing or not.
     *
     * @param string $path Path to normalize.
     *
     * @return string
     */
    public static function path_canonicalize( $path )
    {
        $patterns     = array(
            '~/{2,}~',
            '~/(\./)+~',
            '~([^/\.]+/(?R)*\.{2,}/)~',
            '~\.\./~',
        );
        $replacements = array(
            '/',
            '/',
            '',
            '',
        );

        return preg_replace( $patterns, $replacements, $path );
    }

    /**
     * Checks to see if 3rd party services are available and stores result in option
     *
     * @param string $return_result should we return resulting service status array (default no).
     *
     * @return none if $return_result is false (default), array if $return_result is true.
     */
    public static function check_service_availability( $return_result = false )
    {
        $service_availability_resp = wp_remote_get( 'https://misc.optimizingmatters.com/api/autoptimize_service_availablity.json?from=aomain&ver=' . AUTOPTIMIZE_PLUGIN_VERSION );
        if ( ! is_wp_error( $service_availability_resp ) ) {

            if ( '200' == wp_remote_retrieve_response_code( $service_availability_resp ) ) {
                $availabilities = json_decode( wp_remote_retrieve_body( $service_availability_resp ), true );
                if ( is_array( $availabilities ) ) {
                    update_option( 'autoptimize_service_availablity', $availabilities );
                    if ( $return_result ) {
''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
                        return $availabilities;
                    }
                }
            }
        }
    }

    /**
     * Returns true if the string is a valid regex.
     *
     * @param string $string String, duh.
     *
     * @return bool
     */
    public static function str_is_valid_regex( $string )
    {
        set_error_handler( function() {}, E_WARNING );
        $is_regex = ( false !== preg_match( $string, '' ) );
        restore_error_handler();

        return $is_regex;
    }
}


1		<?php
2		/**
3		* General helpers.
4		*/
5
6		if ( ! defined( 'ABSPATH' ) ) {
7		exit;
8		}
9
10		class autoptimizeUtils
11		{
12		/**
13		* Returns true when mbstring is available.
14		*
15		* @param bool\|null $override Allows overriding the decision.
16		*
17		* @return bool
18		*/
19		public static function mbstring_available( $override = null )
20		{
21		static $available = null;
22
23		if ( null === $available ) {
24		$available = \extension_loaded( 'mbstring' );
25		}
26
27		if ( null !== $override ) {
28		$available = $override;
29		}
30
31		return $available;
32		}
33
34		/**
35		* Multibyte-capable strpos() if support is available on the server.
36		* If not, it falls back to using \strpos().
37		*
38		* @param string $haystack Haystack.
39		* @param string $needle Needle.
40		* @param int $offset Offset.
41		* @param string\|null $encoding Encoding. Default null.
42		*
43		* @return int\|false
44		*/
45		public static function strpos( $haystack, $needle, $offset = 0, $encoding = null )
46		{
47		if ( self::mbstring_available() ) {
48		return ( null === $encoding ) ? \mb_strpos( $haystack, $needle, $offset ) : \mb_strlen( $haystack, $needle, $offset, $encoding );
49		} else {
50		return \strpos( $haystack, $needle, $offset );
51		}
52		}
53
54		/**
55		* Attempts to return the number of characters in the given $string if
56		* mbstring is available. Returns the number of bytes
57		* (instead of characters) as fallback.
58		*
59		* @param string $string String.
60		* @param string\|null $encoding Encoding.
61		*
62		* @return int Number of charcters or bytes in given $string
63		* (characters if/when supported, bytes otherwise).
64		*/
65		public static function strlen( $string, $encoding = null )
66		{
67		if ( self::mbstring_available() ) {
68		return ( null === $encoding ) ? \mb_strlen( $string ) : \mb_strlen( $string, $encoding );
69		} else {
70		return \strlen( $string );
71		}
72		}
73
74		/**
75		* Our wrapper around implementations of \substr_replace()
76		* that attempts to not break things horribly if at all possible.
77		* Uses mbstring if available, before falling back to regular
78		* substr_replace() (which works just fine in the majority of cases).
79		*
80		* @param string $string String.
81		* @param string $replacement Replacement.
82		* @param int $start Start offset.
83		* @param int\|null $length Length.
84		* @param string\|null $encoding Encoding.
85		*
86		* @return string
87		*/
88		public static function substr_replace( $string, $replacement, $start, $length = null, $encoding = null )
89		{
90		if ( self::mbstring_available() ) {
91		$strlen = self::strlen( $string, $encoding );
92
93		if ( $start < 0 ) {
94		if ( -$start < $strlen ) {
95		$start = $strlen + $start;
96		} else {
97		$start = 0;
98		}
99		} elseif ( $start > $strlen ) {
100		$start = $strlen;
101		}
102
103		if ( null === $length \|\| '' === $length ) {
		0 ignored issues – show Unused Code Bug introduced 2018-10-07 12:00 UTC by Report Bug Copy Issue Report The strict comparison `===` seems to always evaluate to `false` as the types of `''` (`string`) and `$length` (`integer`) can never be identical. Maybe you want to use a loose comparison `==` instead? Loading history...
104		$start2 = $strlen;
105		} elseif ( $length < 0 ) {
106		$start2 = $strlen + $length;
107		if ( $start2 < $start ) {
108		$start2 = $start;
109		}
110		} else {
111		$start2 = $start + $length;
112		}
113
114		if ( null === $encoding ) {
115		$leader = $start ? \mb_substr( $string, 0, $start ) : '';
116		$trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null ) : '';
117		} else {
118		$leader = $start ? \mb_substr( $string, 0, $start, $encoding ) : '';
119		$trailer = ( $start2 < $strlen ) ? \mb_substr( $string, $start2, null, $encoding ) : '';
120		}
121
122		return "{$leader}{$replacement}{$trailer}";
123		}
124
125		return ( null === $length ) ? \substr_replace( $string, $replacement, $start ) : \substr_replace( $string, $replacement, $start, $length );
126		}
127
128		/**
129		* Decides whether this is a "subdirectory site" or not.
130		*
131		* @param bool $override Allows overriding the decision when needed.
132		*
133		* @return bool
134		*/
135		public static function siteurl_not_root( $override = null )
136		{
137		static $subdir = null;
138
139		if ( null === $subdir ) {
140		$parts = self::get_ao_wp_site_url_parts();
141		$subdir = ( isset( $parts['path'] ) && ( '/' !== $parts['path'] ) );
142		}
143
144		if ( null !== $override ) {
145		$subdir = $override;
146		}
147
148		return $subdir;
149		}
150
151		/**
152		* Parse AUTOPTIMIZE_WP_SITE_URL into components using \parse_url(), but do
153		* so only once per request/lifecycle.
154		*
155		* @return array
156		*/
157		public static function get_ao_wp_site_url_parts()
158		{
159		static $parts = array();
160
161		if ( empty( $parts ) ) {
162		$parts = \parse_url( AUTOPTIMIZE_WP_SITE_URL );
163		}
164
165		return $parts;
166		}
167
168		/**
169		* Modify given $cdn_url to include the site path when needed.
170		*
171		* @param string $cdn_url CDN URL to tweak.
172		* @param bool $force_cache_miss Force a cache miss in order to be able
173		* to re-run the filter.
174		*
175		* @return string
176		*/
177		public static function tweak_cdn_url_if_needed( $cdn_url, $force_cache_miss = false )
178		{
179		static $results = array();
180
181		if ( ! isset( $results[ $cdn_url ] ) \|\| $force_cache_miss ) {
182
183		// In order to return unmodified input when there's no need to tweak.
184		$results[ $cdn_url ] = $cdn_url;
185
186		// Behind a default true filter for backcompat, and only for sites
187		// in a subfolder/subdirectory, but still easily turned off if
188		// not wanted/needed...
189		if ( autoptimizeUtils::siteurl_not_root() ) {
190		$check = apply_filters( 'autoptimize_filter_cdn_magic_path_check', true, $cdn_url );
191		if ( $check ) {
192		$site_url_parts = autoptimizeUtils::get_ao_wp_site_url_parts();
193		$cdn_url_parts = \parse_url( $cdn_url );
194		$schemeless = self::is_protocol_relative( $cdn_url );
195		$cdn_url_parts = self::maybe_replace_cdn_path( $site_url_parts, $cdn_url_parts );
		0 ignored issues – show Security Bug introduced 2018-10-07 12:00 UTC by Report Bug Copy Issue Report It seems like `$site_url_parts` defined by `\autoptimizeUtils::get_ao_wp_site_url_parts()` on line `192` can also be of type `false`; however, `autoptimizeUtils::maybe_replace_cdn_path()` does only seem to accept `array`, did you maybe forget to handle an error condition? This check looks for type mismatches where the missing type is `false`. This is usually indicative of an error condtion. Consider the follow example <?php function getDate($date) { if ($date !== null) { return new DateTime($date); } return false; } This function either returns a new `DateTime` object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returned `false` before passing on the value to another function or method that may not be able to handle a `false`. Loading history... Security Bug introduced 2018-10-07 12:00 UTC by Report Bug Copy Issue Report It seems like `$cdn_url_parts` defined by `self::maybe_replace_cdn_..._parts, $cdn_url_parts)` on line `195` can also be of type `false`; however, `autoptimizeUtils::maybe_replace_cdn_path()` does only seem to accept `array`, did you maybe forget to handle an error condition? This check looks for type mismatches where the missing type is `false`. This is usually indicative of an error condtion. Consider the follow example <?php function getDate($date) { if ($date !== null) { return new DateTime($date); } return false; } This function either returns a new `DateTime` object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returned `false` before passing on the value to another function or method that may not be able to handle a `false`. Loading history...
196		if ( false !== $cdn_url_parts ) {
197		$results[ $cdn_url ] = self::assemble_parsed_url( $cdn_url_parts, $schemeless );
198		}
199		}
200		}
201		}
202
203		return $results[ $cdn_url ];
204		}
205
206		/**
207		* When siteurl contans a path other than '/' and the CDN URL does not have
208		* a path or it's path is '/', this will modify the CDN URL's path component
209		* to match that of the siteurl.
210		* This is to support "magic" CDN urls that worked that way before v2.4...
211		*
212		* @param array $site_url_parts Site URL components array.
213		* @param array $cdn_url_parts CDN URL components array.
214		*
215		* @return array\|false
216		*/
217		public static function maybe_replace_cdn_path( array $site_url_parts, array $cdn_url_parts )
218		{
219		if ( isset( $site_url_parts['path'] ) && '/' !== $site_url_parts['path'] ) {
220		if ( ! isset( $cdn_url_parts['path'] ) \|\| '/' === $cdn_url_parts['path'] ) {
221		$cdn_url_parts['path'] = $site_url_parts['path'];
222		return $cdn_url_parts;
223		}
224		}
225
226		return false;
227		}
228
229		/**
230		* Given an array or components returned from \parse_url(), assembles back
231		* the complete URL.
232		* If optional
233		*
234		* @param array $parsed_url URL components array.
235		* @param bool $schemeless Whether the assembled URL should be
236		* protocol-relative (schemeless) or not.
237		*
238		* @return string
239		*/
240		public static function assemble_parsed_url( array $parsed_url, $schemeless = false )
241		{
242		$scheme = isset( $parsed_url['scheme'] ) ? $parsed_url['scheme'] . '://' : '';
243		if ( $schemeless ) {
244		$scheme = '//';
245		}
246		$host = isset( $parsed_url['host'] ) ? $parsed_url['host'] : '';
247		$port = isset( $parsed_url['port'] ) ? ':' . $parsed_url['port'] : '';
248		$user = isset( $parsed_url['user'] ) ? $parsed_url['user'] : '';
249		$pass = isset( $parsed_url['pass'] ) ? ':' . $parsed_url['pass'] : '';
250		$pass = ( $user \|\| $pass ) ? "$pass@" : '';
251		$path = isset( $parsed_url['path'] ) ? $parsed_url['path'] : '';
252		$query = isset( $parsed_url['query'] ) ? '?' . $parsed_url['query'] : '';
253		$fragment = isset( $parsed_url['fragment'] ) ? '#' . $parsed_url['fragment'] : '';
254
255		return "$scheme$user$pass$host$port$path$query$fragment";
256		}
257
258		/**
259		* Returns true if given $url is protocol-relative.
260		*
261		* @param string $url URL to check.
262		*
263		* @return bool
264		*/
265		public static function is_protocol_relative( $url )
266		{
267		$result = false;
268
269		if ( ! empty( $url ) ) {
270		$result = ( '/' === $url{1} ); // second char is `/`.
271		}
272
273		return $result;
274		}
275
276		/**
277		* Canonicalizes the given path regardless of it existing or not.
278		*
279		* @param string $path Path to normalize.
280		*
281		* @return string
282		*/
283		public static function path_canonicalize( $path )
284		{
285		$patterns = array(
286		'~/{2,}~',
287		'~/(\./)+~',
288		'~([^/\.]+/(?R)*\.{2,}/)~',
289		'~\.\./~',
290		);
291		$replacements = array(
292		'/',
293		'/',
294		'',
295		'',
296		);
297
298		return preg_replace( $patterns, $replacements, $path );
299		}
300
301		/**
302		* Checks to see if 3rd party services are available and stores result in option
303		*
304		* @param string $return_result should we return resulting service status array (default no).
305		*
306		* @return none if $return_result is false (default), array if $return_result is true.
307		*/
308		public static function check_service_availability( $return_result = false )
309		{
310		$service_availability_resp = wp_remote_get( 'https://misc.optimizingmatters.com/api/autoptimize_service_availablity.json?from=aomain&ver=' . AUTOPTIMIZE_PLUGIN_VERSION );
311	View Code Duplication	if ( ! is_wp_error( $service_availability_resp ) ) {
		0 ignored issues – show Duplication introduced 2018-10-07 12:00 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
312		if ( '200' == wp_remote_retrieve_response_code( $service_availability_resp ) ) {
313		$availabilities = json_decode( wp_remote_retrieve_body( $service_availability_resp ), true );
314		if ( is_array( $availabilities ) ) {
315		update_option( 'autoptimize_service_availablity', $availabilities );
316		if ( $return_result ) {
		0 ignored issues – show Bug Best Practice introduced 2018-10-07 12:00 UTC by Report Bug Copy Issue Report The expression `$return_result` of type `false\|string` is loosely compared to `true`; this is ambiguous if the string can be empty. You might want to explicitly use `!== false` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `string` values, the empty string `''` is a special case, in particular the following results might be unexpected: '' == false // true '' == null // true 'ab' == false // false 'ab' == null // false // It is often better to use strict comparison '' === false // false '' === null // false Loading history...
317		return $availabilities;
318		}
319		}
320		}
321		}
322		}
323
324		/**
325		* Returns true if the string is a valid regex.
326		*
327		* @param string $string String, duh.
328		*
329		* @return bool
330		*/
331		public static function str_is_valid_regex( $string )
332		{
333		set_error_handler( function() {}, E_WARNING );
334		$is_regex = ( false !== preg_match( $string, '' ) );
335		restore_error_handler();
336
337		return $is_regex;
338		}
339		}
340

futtta / autoptimize

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autoptimizeUtils::substr_replace() C

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