|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* Phossa Project |
|
4
|
|
|
* |
|
5
|
|
|
* PHP version 5.4 |
|
6
|
|
|
* |
|
7
|
|
|
* @category Library |
|
8
|
|
|
* @package Phossa2\Query |
|
9
|
|
|
* @copyright Copyright (c) 2016 phossa.com |
|
10
|
|
|
* @license http://mit-license.org/ MIT License |
|
11
|
|
|
* @link http://www.phossa.com/ |
|
12
|
|
|
*/ |
|
13
|
|
|
/*# declare(strict_types=1); */ |
|
14
|
|
|
|
|
15
|
|
|
namespace Phossa2\Query\Misc; |
|
16
|
|
|
|
|
17
|
|
|
/** |
|
18
|
|
|
* Parameter |
|
19
|
|
|
* |
|
20
|
|
|
* Dealing with positioned or named parameters |
|
21
|
|
|
* |
|
22
|
|
|
* @package Phossa2\Query |
|
23
|
|
|
* @author Hong Zhang <[email protected]> |
|
24
|
|
|
* @version 2.0.0 |
|
25
|
|
|
* @since 2.0.0 added |
|
26
|
|
|
*/ |
|
27
|
|
|
class Parameter |
|
28
|
|
|
{ |
|
29
|
|
|
/** |
|
30
|
|
|
* parameter pool |
|
31
|
|
|
* |
|
32
|
|
|
* @var array |
|
33
|
|
|
* @access protected |
|
34
|
|
|
*/ |
|
35
|
|
|
protected $parameters; |
|
36
|
|
|
|
|
37
|
|
|
/** |
|
38
|
|
|
* The escape callable |
|
39
|
|
|
* |
|
40
|
|
|
* @var callable |
|
41
|
|
|
* @access protected |
|
42
|
|
|
*/ |
|
43
|
|
|
protected $escape; |
|
44
|
|
|
|
|
45
|
|
|
/** |
|
46
|
|
|
* Returns a replacement placeholder for a $value |
|
47
|
|
|
* |
|
48
|
|
|
* @param mixed $value |
|
49
|
|
|
* @return string |
|
50
|
|
|
* @access public |
|
51
|
|
|
*/ |
|
52
|
|
|
public function getPlaceholder($value)/*# : string */ |
|
53
|
|
|
{ |
|
54
|
|
|
// unique key with a pattern |
|
55
|
|
|
$key = uniqid('__PHQUERY_') . '__'; |
|
56
|
|
|
$this->parameters[$key] = $value; |
|
57
|
|
|
return $key; |
|
58
|
|
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* Replace placeholders in the SQL with '?' or real value |
|
62
|
|
|
* |
|
63
|
|
|
* @param string $sql |
|
64
|
|
|
* @param array &$bindings |
|
65
|
|
|
* @param array $settings |
|
66
|
|
|
* @return string |
|
67
|
|
|
* @access public |
|
68
|
|
|
*/ |
|
69
|
|
|
public function bindValues( |
|
70
|
|
|
/*# string */ $sql, |
|
71
|
|
|
array &$bindings, |
|
72
|
|
|
array $settings |
|
73
|
|
|
)/*# : string */ { |
|
74
|
|
|
// make sure escape function ok |
|
75
|
|
|
$this->setEscapeCallable($settings['escapeFunction']); |
|
76
|
|
|
|
|
77
|
|
|
// replace each placeholder with corresponding ?/:name/value |
|
78
|
|
|
return preg_replace_callback( |
|
79
|
|
|
'/\b__PHQUERY_[^_]++__\b/', |
|
80
|
|
|
function ($m) use (&$bindings, $settings) { |
|
81
|
|
|
return $this->replacePlaceholders($m[0], $bindings, $settings); |
|
82
|
|
|
}, |
|
83
|
|
|
$sql |
|
84
|
|
|
); |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
|
|
/** |
|
88
|
|
|
* Replace '?' in the string with placeholders for value. |
|
89
|
|
|
* |
|
90
|
|
|
* e.q. replace 'RANGE(?, ?)' with values [1, 10] etc. |
|
91
|
|
|
* |
|
92
|
|
|
* @param string $string |
|
93
|
|
|
* @param array $values |
|
94
|
|
|
* @access public |
|
95
|
|
|
*/ |
|
96
|
|
|
public function replaceQuestionMark( |
|
97
|
|
|
/*# string */ $string, |
|
98
|
|
|
array $values |
|
99
|
|
|
)/*# : string */ { |
|
100
|
|
|
$pat = $rep = []; |
|
101
|
|
|
foreach ($values as $val) { |
|
102
|
|
|
$pat[] = '/\?/'; // question mark |
|
103
|
|
|
$rep[] = $this->getPlaceholder($val); // placeholder |
|
104
|
|
|
} |
|
105
|
|
|
return preg_replace($pat, $rep, $string, 1); |
|
106
|
|
|
} |
|
107
|
|
|
|
|
108
|
|
|
/** |
|
109
|
|
|
* Replace each placeholder with '?', ':name' or value |
|
110
|
|
|
* |
|
111
|
|
|
* @param string $key |
|
112
|
|
|
* @param array &$bindings |
|
113
|
|
|
* @param array $settings |
|
114
|
|
|
* @return string |
|
115
|
|
|
* @access protected |
|
116
|
|
|
*/ |
|
117
|
|
|
protected function replacePlaceholders( |
|
118
|
|
|
/*# string */ $key, |
|
119
|
|
|
array &$bindings, |
|
120
|
|
|
array $settings |
|
121
|
|
|
)/*# : string */ { |
|
122
|
|
|
$escape = $this->escape; |
|
123
|
|
|
|
|
124
|
|
|
$value = $this->parameters[$key]; |
|
125
|
|
|
if ($settings['positionedParam']) { |
|
126
|
|
|
$bindings[] = $value; |
|
127
|
|
|
return '?'; |
|
128
|
|
|
} elseif ($settings['namedParam'] && $this->isNamedParam($value)) { |
|
129
|
|
|
return $value; |
|
130
|
|
|
} else { |
|
131
|
|
|
return $escape($value); |
|
132
|
|
|
} |
|
133
|
|
|
} |
|
134
|
|
|
|
|
135
|
|
|
/** |
|
136
|
|
|
* Is it a named parameter ? |
|
137
|
|
|
* |
|
138
|
|
|
* @param mixed $value |
|
139
|
|
|
* @return bool |
|
140
|
|
|
* @access protected |
|
141
|
|
|
*/ |
|
142
|
|
|
protected function isNamedParam($value)/*# : bool */ |
|
143
|
|
|
{ |
|
144
|
|
|
return is_string($value) && preg_match('/^:[a-zA-Z]\w*$/', $value); |
|
145
|
|
|
} |
|
146
|
|
|
|
|
147
|
|
|
/** |
|
148
|
|
|
* Set escape/quote method/function |
|
149
|
|
|
* |
|
150
|
|
|
* @param null|callable $escapeFunction defult escape function |
|
151
|
|
|
* @return $this |
|
152
|
|
|
* @access protected |
|
153
|
|
|
*/ |
|
154
|
|
|
protected function setEscapeCallable($escapeFunction)/*# : callable */ |
|
155
|
|
|
{ |
|
156
|
|
|
if (!is_callable($escapeFunction)) { |
|
157
|
|
|
$this->escape = function ($v) { |
|
158
|
|
|
if (is_numeric($v) && !is_string($v)) { |
|
159
|
|
|
return $v; |
|
160
|
|
|
} else { |
|
161
|
|
|
return "'" . str_replace("'", "\\'", (string) $v) . "'"; |
|
162
|
|
|
} |
|
163
|
|
|
}; |
|
164
|
|
|
} else { |
|
165
|
|
|
$this->escape = $escapeFunction; |
|
166
|
|
|
} |
|
167
|
|
|
return $this; |
|
168
|
|
|
} |
|
169
|
|
|
} |
|
170
|
|
|
|
phossa2 /
query
