RegexIterator::setMode

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

    RegexIterator::setMode — Sets the operation mode

    说明

    publicRegexIterator::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
    valueconstant
    0RegexIterator::MATCH
    1RegexIterator::GET_MATCH
    2RegexIterator::ALL_MATCHES
    3RegexIterator::SPLIT
    4RegexIterator::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

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