array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'regexiterator.setmode.php', 1 => 'RegexIterator::setMode', 2 => 'Sets the operation mode', ), 'up' => array ( 0 => 'class.regexiterator.php', 1 => 'RegexIterator', ), 'prev' => array ( 0 => 'regexiterator.setflags.php', 1 => 'RegexIterator::setFlags', ), 'next' => array ( 0 => 'regexiterator.setpregflags.php', 1 => 'RegexIterator::setPregFlags', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/spl/regexiterator/setmode.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

RegexIterator::setMode

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

RegexIterator::setMode — Sets the operation mode

说明

public RegexIterator::setMode(int $mode): void

Sets the operation mode.

参数

mode

The operation mode.

The available modes are listed below. The actual meanings of these modes are described in the predefined constants.
RegexIterator modes
value constant
0 RegexIterator::MATCH
1 RegexIterator::GET_MATCH
2 RegexIterator::ALL_MATCHES
3 RegexIterator::SPLIT
4 RegexIterator::REPLACE

返回值

没有返回值。

示例

示例 #1 RegexIterator::setMode() example

<?php
$test = array ('str1' => 'test 1', 'test str2' => 'another test', 'str3' => 'test 123');

$arrayIterator = new ArrayIterator($test);
// Filter everything that starts with 'test ' followed by one or more numbers.
$regexIterator = new RegexIterator($arrayIterator, '/^test (\d+)/');
// Operation mode: Replace actual value with the matches
$regexIterator->setMode(RegexIterator::GET_MATCH);

foreach ($regexIterator as $key => $value) {
// print out the matched number(s)
echo $key . ' => ' . $value[1] . PHP_EOL;
}
?>

以上示例的输出类似于：

str1 => 1
str3 => 123

参见