PHP determines whether a string contains html tag_PHP tutorial

function judgeHtml($str){
if($str != strip_tags($str)){
echo 'yes';
}else{
echo 'no';
}
}
judgeHtml('

a');
echo '
';
judgeHtml('a');
Output: Yes
No

http://www.bkjia.com/PHPjc/825233.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/825233.htmlTechArticlefunction judgeHtml($str){ if($str != strip_tags($str)){ echo 'Yes' ; }else{ echo 'none'; } } judgeHtml('pa'); echo 'br /'; judgeHtml('a'); Output: yes or no...