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PHP与Perl的正则表达式替换等效于什么?
原标题:What is the PHP equivalent to Perl s regex alternations?

我正在将我的一个旧Perl程序转换为PHP,但与Perl相比,PHP的字符串处理有问题。

在Perl中,如果我想知道$string是否包含thisthatthe_other,我可以使用:

if ($string =~ /this|that|the_other/){do something here}

PHP中有类似的东西吗?

问题回答

您可以使用正则表达式(例如preg_match):

if(preg_match( /this|that|the_other/ , $string))

或将其明确化(例如strstr):

if(strstr($string,  this ) || strstr($string,  that ) || strstr($string,  the_other ))

您可以使用PHP的preg_match函数用于简单的正则表达式测试。

if ( preg_match( "/this|that|the_other/", $string ) ) { 
    ...
}

在PHP中,您可以使用preg_match函数如下:

if( preg_match( /this|that|the_other/ ,$string) ) {
  // do something here.
}




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