(PHP 5 >= 5.2.0, PHP 7, PHP 8)
RegexIterator::setFlags — Sets the flags
$flags
) : voidSets the flags.
flagsThe 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.
| value | constant |
|---|---|
| 1 | RegexIterator::USE_KEY |
没有返回值。
Example #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";
}
?>
以上例程会输出：
teststr2 => another test