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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