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RegexIterator::setFlags

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

RegexIterator::setFlags — Sets the flags

说明

public RegexIterator::setFlags(int $flags): void

Sets the flags.

参数

flags

The flags to set, a bitmask of class constants.

The available flags are listed below. The actual meanings of these flags are described in the predefined constants.
RegexIterator flags
value constant
1 RegexIterator::USE_KEY

返回值

没有返回值。

示例

示例 #1 RegexIterator::setFlags() example

Creates a new RegexIterator that filters all entries whose key starts with 'test'.

<?php
$test = array ('str1' => 'test 1', 'teststr2' => 'another test', 'str3' => 'test 123');

$arrayIterator = new ArrayIterator($test);
$regexIterator = new RegexIterator($arrayIterator, '/^test/');
$regexIterator->setFlags(RegexIterator::USE_KEY);

foreach ($regexIterator as $key => $value) {
echo $key . ' => ' . $value . "\n";
}
?>

以上示例会输出：

teststr2 => another test

参见