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PHP determines whether a string is a palindrome string_PHP tutorial

WBOY
WBOYOriginal
2016-07-13 17:15:34971browse

This article will introduce you to an example to determine whether a string is a palindrome string. Friends who need to know more can refer to it.

 代码如下 复制代码
function ishuiwen($str){
$len=strlen($str);
$l=1;
$k=intval($len/2)+1;
for($j=0;$j<$k;$j++){
if (substr($str,$j,1)!=substr($str,$len-$j-1,1))
{
$l=0;
break;
}


}
if ($l==1)
{
return 1;
}
else
{
return -1;
}
}

$str=12321;
echo ishuiwen($str);
?>

www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/628807.htmlTechArticleThis article will introduce you to an example to determine whether a string is a palindrome string. If you need to know more Friends can refer to it. The code is as follows Copy the code ?php function ishuiwen...
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