Question

php preg_replace正则表达式问题

我想要把'DEFAULT_LANGUAGE' =>'zh-cn',通过preg_replace替换成'DEFAULT_LANGUAGE' =>'us-en',
各位高手能不能告诉我在preg_replace中间里的正则表达式要怎么写呀~~

Answer 1

<?php
$str = "
'DEFAULT_LANGUAGE' =>'zh-cn',
";
//替换所有 => 'zh-cn' 的项
$str = preg_replace('/([^s]+)\s*=>\s*\'zh-cn\'/', '${1}=>\'us-en\'', $str);

echo $str;
?>

如果只替换 DEFAULT_LANGUAGE
$str = preg_replace('/(\'DEFAULT_LANGUAGE\')\s*=>\s*\'zh-cn\'/', '${1}=>\'us-en\'', $str);