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<?php
namespace Safe;
use Safe\Exceptions\PcreException;
/**
* Returns the array consisting of the elements of the
* array array that match the given
* pattern.
*
* @param string $pattern The pattern to search for, as a string.
* @param array $array The input array.
* @param int $flags If set to PREG_GREP_INVERT, this function returns
* the elements of the input array that do not match
* the given pattern.
* @return array Returns an array indexed using the keys from the
* array array.
* @throws PcreException
*
*/
function preg_grep(string $pattern, array $array, int $flags = 0): array
{
error_clear_last();
$safeResult = \preg_grep($pattern, $array, $flags);
if ($safeResult === false) {
throw PcreException::createFromPhpError();
}
return $safeResult;
}
/**
* Searches subject for all matches to the regular
* expression given in pattern and puts them in
* matches in the order specified by
* flags.
*
* After the first match is found, the subsequent searches are continued
* on from end of the last match.
*
* @param string $pattern The pattern to search for, as a string.
* @param string $subject The input string.
* @param array|null $matches Array of all matches in multi-dimensional array ordered according to
* flags.
* @param int $flags Can be a combination of the following flags (note that it doesn't make
* sense to use PREG_PATTERN_ORDER together with
* PREG_SET_ORDER):
*
*
* PREG_PATTERN_ORDER
*
*
* Orders results so that $matches[0] is an array of full
* pattern matches, $matches[1] is an array of strings matched by
* the first parenthesized subpattern, and so on.
*
*
*
*
*
* ]]>
*
* The above example will output:
*
* example: , this is a test
* example: , this is a test
* ]]>
*
*
* So, $out[0] contains array of strings that matched full pattern,
* and $out[1] contains array of strings enclosed by tags.
*
*
*
*
* If the pattern contains named subpatterns, $matches
* additionally contains entries for keys with the subpattern name.
*
*
* If the pattern contains duplicate named subpatterns, only the rightmost
* subpattern is stored in $matches[NAME].
*
*
*
* ]]>
*
* The above example will output:
*
*
* [1] => bar
* )
* ]]>
*
*
*
*
*
*
* PREG_SET_ORDER
*
*
* Orders results so that $matches[0] is an array of first set
* of matches, $matches[1] is an array of second set of matches,
* and so on.
*
*
*
* ]]>
*
* The above example will output:
*
* example: , example:
* this is a test, this is a test
* ]]>
*
*
*
*
*
*
* PREG_OFFSET_CAPTURE
*
*
* If this flag is passed, for every occurring match the appendant string
* offset (in bytes) will also be returned. Note that this changes the value of
* matches into an array of arrays where every element is an
* array consisting of the matched string at offset 0
* and its string offset into subject at offset
* 1.
*
*
*
* ]]>
*
* The above example will output:
*
* Array
* (
* [0] => Array
* (
* [0] => foobarbaz
* [1] => 0
* )
*
* )
*
* [1] => Array
* (
* [0] => Array
* (
* [0] => foo
* [1] => 0
* )
*
* )
*
* [2] => Array
* (
* [0] => Array
* (
* [0] => bar
* [1] => 3
* )
*
* )
*
* [3] => Array
* (
* [0] => Array
* (
* [0] => baz
* [1] => 6
* )
*
* )
*
* )
* ]]>
*
*
*
*
*
*
* PREG_UNMATCHED_AS_NULL
*
*
* If this flag is passed, unmatched subpatterns are reported as NULL;
* otherwise they are reported as an empty string.
*
*
*
*
*
* Orders results so that $matches[0] is an array of full
* pattern matches, $matches[1] is an array of strings matched by
* the first parenthesized subpattern, and so on.
*
*
*
*
* ]]>
*
* The above example will output:
*
* example: , this is a test
* example: , this is a test
* ]]>
*
*
* So, $out[0] contains array of strings that matched full pattern,
* and $out[1] contains array of strings enclosed by tags.
*
*
*
* The above example will output:
*
* So, $out[0] contains array of strings that matched full pattern,
* and $out[1] contains array of strings enclosed by tags.
*
* If the pattern contains named subpatterns, $matches
* additionally contains entries for keys with the subpattern name.
*
* If the pattern contains duplicate named subpatterns, only the rightmost
* subpattern is stored in $matches[NAME].
*
*
*
* ]]>
*
* The above example will output:
*
*
* [1] => bar
* )
* ]]>
*
*
*
* The above example will output:
*
* Orders results so that $matches[0] is an array of first set
* of matches, $matches[1] is an array of second set of matches,
* and so on.
*
*
*
* ]]>
*
* The above example will output:
*
* example: , example:
* this is a test, this is a test
* ]]>
*
*
*
* The above example will output:
*
* If this flag is passed, for every occurring match the appendant string
* offset (in bytes) will also be returned. Note that this changes the value of
* matches into an array of arrays where every element is an
* array consisting of the matched string at offset 0
* and its string offset into subject at offset
* 1.
*
*
*
* ]]>
*
* The above example will output:
*
* Array
* (
* [0] => Array
* (
* [0] => foobarbaz
* [1] => 0
* )
*
* )
*
* [1] => Array
* (
* [0] => Array
* (
* [0] => foo
* [1] => 0
* )
*
* )
*
* [2] => Array
* (
* [0] => Array
* (
* [0] => bar
* [1] => 3
* )
*
* )
*
* [3] => Array
* (
* [0] => Array
* (
* [0] => baz
* [1] => 6
* )
*
* )
*
* )
* ]]>
*
*
*
* The above example will output:
*
* If this flag is passed, unmatched subpatterns are reported as NULL;
* otherwise they are reported as an empty string.
*
* If no order flag is given, PREG_PATTERN_ORDER is
* assumed.
* @param int $offset Orders results so that $matches[0] is an array of full
* pattern matches, $matches[1] is an array of strings matched by
* the first parenthesized subpattern, and so on.
*
*
*
*
* ]]>
*
* The above example will output:
*
* example: , this is a test
* example: , this is a test
* ]]>
*
*
* So, $out[0] contains array of strings that matched full pattern,
* and $out[1] contains array of strings enclosed by tags.
*
*
*
* The above example will output:
*
* So, $out[0] contains array of strings that matched full pattern,
* and $out[1] contains array of strings enclosed by tags.
*
* If the pattern contains named subpatterns, $matches
* additionally contains entries for keys with the subpattern name.
*
* If the pattern contains duplicate named subpatterns, only the rightmost
* subpattern is stored in $matches[NAME].
*
*
*
* ]]>
*
* The above example will output:
*
*
* [1] => bar
* )
* ]]>
*
*
*
* The above example will output:
* @return int|null Returns the number of full pattern matches (which might be zero).
* @throws PcreException
*
*/
function preg_match_all(string $pattern, string $subject, ?array &$matches = null, int $flags = 0, int $offset = 0): ?int
{
error_clear_last();
$safeResult = \preg_match_all($pattern, $subject, $matches, $flags, $offset);
if ($safeResult === false) {
throw PcreException::createFromPhpError();
}
return $safeResult;
}
/**
* Searches subject for a match to the regular
* expression given in pattern.
*
* @param string $pattern The pattern to search for, as a string.
* @param string $subject The input string.
* @param string[]|null $matches If matches is provided, then it is filled with
* the results of search. $matches[0] will contain the
* text that matched the full pattern, $matches[1]
* will have the text that matched the first captured parenthesized
* subpattern, and so on.
* @param int $flags flags can be a combination of the following flags:
*
*
* PREG_OFFSET_CAPTURE
*
*
* If this flag is passed, for every occurring match the appendant string
* offset (in bytes) will also be returned. Note that this changes the value of
* matches into an array where every element is an
* array consisting of the matched string at offset 0
* and its string offset into subject at offset
* 1.
*
*
*
* ]]>
*
* The above example will output:
*
* Array
* (
* [0] => foobarbaz
* [1] => 0
* )
*
* [1] => Array
* (
* [0] => foo
* [1] => 0
* )
*
* [2] => Array
* (
* [0] => bar
* [1] => 3
* )
*
* [3] => Array
* (
* [0] => baz
* [1] => 6
* )
*
* )
* ]]>
*
*
*
*
*
*
* PREG_UNMATCHED_AS_NULL
*
*
* If this flag is passed, unmatched subpatterns are reported as NULL;
* otherwise they are reported as an empty string.
*
*
*
* ]]>
*
* The above example will output:
*
*
* string(2) "ac"
* [1]=>
* string(1) "a"
* [2]=>
* string(0) ""
* [3]=>
* string(1) "c"
* }
* array(4) {
* [0]=>
* string(2) "ac"
* [1]=>
* string(1) "a"
* [2]=>
* NULL
* [3]=>
* string(1) "c"
* }
* ]]>
*
*
*
*
*
*
*
* If this flag is passed, for every occurring match the appendant string
* offset (in bytes) will also be returned. Note that this changes the value of
* matches into an array where every element is an
* array consisting of the matched string at offset 0
* and its string offset into subject at offset
* 1.
*
*
*
* ]]>
*
* The above example will output:
*
* Array
* (
* [0] => foobarbaz
* [1] => 0
* )
*
* [1] => Array
* (
* [0] => foo
* [1] => 0
* )
*
* [2] => Array
* (
* [0] => bar
* [1] => 3
* )
*
* [3] => Array
* (
* [0] => baz
* [1] => 6
* )
*
* )
* ]]>
*
*
*
* The above example will output:
*
* If this flag is passed, unmatched subpatterns are reported as NULL;
* otherwise they are reported as an empty string.
*
*
*
* ]]>
*
* The above example will output:
*
*
* string(2) "ac"
* [1]=>
* string(1) "a"
* [2]=>
* string(0) ""
* [3]=>
* string(1) "c"
* }
* array(4) {
* [0]=>
* string(2) "ac"
* [1]=>
* string(1) "a"
* [2]=>
* NULL
* [3]=>
* string(1) "c"
* }
* ]]>
*
*
*
* The above example will output:
* @param int $offset If this flag is passed, for every occurring match the appendant string
* offset (in bytes) will also be returned. Note that this changes the value of
* matches into an array where every element is an
* array consisting of the matched string at offset 0
* and its string offset into subject at offset
* 1.
*
*
*
* ]]>
*
* The above example will output:
*
* Array
* (
* [0] => foobarbaz
* [1] => 0
* )
*
* [1] => Array
* (
* [0] => foo
* [1] => 0
* )
*
* [2] => Array
* (
* [0] => bar
* [1] => 3
* )
*
* [3] => Array
* (
* [0] => baz
* [1] => 6
* )
*
* )
* ]]>
*
*
*
* The above example will output:
* @return int preg_match returns 1 if the pattern
* matches given subject, 0 if it does not.
* @throws PcreException
*
*/
function preg_match(string $pattern, string $subject, ?iterable &$matches = null, int $flags = 0, int $offset = 0): int
{
error_clear_last();
$safeResult = \preg_match($pattern, $subject, $matches, $flags, $offset);
if ($safeResult === false) {
throw PcreException::createFromPhpError();
}
return $safeResult;
}
/**
* Split the given string by a regular expression.
*
* @param string $pattern The pattern to search for, as a string.
* @param string $subject The input string.
* @param int|null $limit If specified, then only substrings up to limit
* are returned with the rest of the string being placed in the last
* substring. A limit of -1 or 0 means "no limit".
* @param int $flags flags can be any combination of the following
* flags (combined with the | bitwise operator):
*
*
* PREG_SPLIT_NO_EMPTY
*
*
* If this flag is set, only non-empty pieces will be returned by
* preg_split.
*
*
*
*
* PREG_SPLIT_DELIM_CAPTURE
*
*
* If this flag is set, parenthesized expression in the delimiter pattern
* will be captured and returned as well.
*
*
*
*
* PREG_SPLIT_OFFSET_CAPTURE
*
*
* If this flag is set, for every occurring match the appendant string
* offset will also be returned. Note that this changes the return
* value in an array where every element is an array consisting of the
* matched string at offset 0 and its string offset
* into subject at offset 1.
*
*
*
*
*
* If this flag is set, for every occurring match the appendant string
* offset will also be returned. Note that this changes the return
* value in an array where every element is an array consisting of the
* matched string at offset 0 and its string offset
* into subject at offset 1.
* @return array Returns an array containing substrings of subject
* split along boundaries matched by pattern.
* @throws PcreException
*
*/
function preg_split(string $pattern, string $subject, ?int $limit = -1, int $flags = 0): array
{
error_clear_last();
$safeResult = \preg_split($pattern, $subject, $limit, $flags);
if ($safeResult === false) {
throw PcreException::createFromPhpError();
}
return $safeResult;
}