Get image src using php code

If you don’t want to use regex (regular expression) to get image src then php’s DOMDocument class is useful to get information Continue reading “Get image src using php code”


Remove empty paragraph tags in php.

You can remove empty <p> tags from content using preg_replace function in php. For searching empty paragraph tags in content , we need to use regulars expression code.

See following example.


$string = '<p>Lorem Ipsum is simply dummy text of the printing and typesetting industry.</p><p></p>'; //content with empty paragraph
$string .= '<p>this paragraph has some content</p>';
$string .= '<p></p>'; //empty paragraph

echo 'string with empty paragraph tags';
echo $string;
echo '<hr/>';

$pattern = "/<p[^>]*><\\/p[^>]*>/"; // regular expression

echo 'string after remove paragraph tags';
echo preg_replace($pattern, '', $string);

See More details about preg_replace() function.

Check valid md5 string in PHP

$md5 = 'd67c5cbf5b01c9f91932e3b8def5e5f8';
$flag = Check_Valid_Md5_String($md5);
if ($flag){ // flag true means string is a valid md5 encrypation
echo 'valid md5 string';
echo 'invalid md5 string or empty string';

//this function will check the string
function Check_Valid_Md5_String($md5=''){
if(empty($md5)) return false;
return preg_match('/^[a-f0-9]{32}$/', $md5);