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(PHP 5 >= 5.2.0)
RegexIterator::__construct — Create a new RegexIterator
$iterator
, string $regex
[, int $mode
= self::MATCH
[, int $flags
= 0
[, int $preg_flags
= 0
]]] )Create a new RegexIterator which filters an Iterator using a regular expression.
iterator
The iterator to apply this regex filter to.
regex
The regular expression to match.
mode
Operation mode, see RegexIterator::setMode() for a list of modes.
flags
Special flags, see RegexIterator::setFlags() for a list of available flags.
preg_flags
The regular expression flags. These flags depend on the operation mode parameter:
operation mode | available flags |
---|---|
RegexIterator::ALL_MATCHES | See preg_match_all() . |
RegexIterator::GET_MATCH | See preg_match() . |
RegexIterator::MATCH | See preg_match() . |
RegexIterator::REPLACE | none. |
RegexIterator::SPLIT | See preg_split() . |
Example #1 RegexIterator::__construct() example
Creates a new RegexIterator that filters all strings that start with 'test'.
<?php
$arrayIterator = new ArrayIterator (array( 'test 1' , 'another test' , 'test 123' ));
$regexIterator = new RegexIterator ( $arrayIterator , '/^test/' );
foreach ( $regexIterator as $value ) {
echo $value . "\n" ;
}
?>
以上例程的输出类似于:
test 1 test 123