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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>PHP array_keys() 实例 - 自学教程(runoops.com)</title>
</head>
<body>
<?php
$a=array(10,20,30,"10");
echo '<pre>';
print_r(array_keys($a,"10",false));
echo '</pre>';
?>
</body>
</html>