Character string processing skills in the PHP getting started tutorial. For more information, see filter, parse, search, intercept, and replace)

This article mainly introduces the string processing skills in the PHP Getting Started Tutorial, combined with the instance form, this paper summarizes and analyzes the php operation techniques for deleting spaces, converting, filtering, parsing, splitting, searching, intercepting, replacing, obtaining, judging, and calculating strings for strings, for more information about PHP string processing skills, see the examples in this article. We will share this with you for your reference. The details are as follows:

Demo1.php

 '; Echo rtrim ($ str); echo'
'; // Clear echo trim ($ str) on both sides; // echo chop ($ str);?>

Demo2.php

Demo3.php

 Who asked Junyi.'; // Echo htmlentities ($ str); // you only need to convert special characters. // echo htmlspecialchars ($ str );//Who asked Junyi.Echo strip_tags ($ str); // who asked Junyi?

Demo4.php

Demo5.php

Demo6.php

 ';  echo str_pad($str,18,'#',STR_PAD_LEFT);  echo '
';  echo str_pad($str,18,'#',STR_PAD_RIGHT);/** * ####oneStopWeb#### * ########oneStopWeb * oneStopWeb######## * */?>

Demo7.php

 OneStopWeb [1] => 163.com) // after the split, after a round of filtering, I need to re-combine // $ arr = array ('onestop', '@', '163. com '); // $ str = implode (' & ', $ arr); // echo $ str; // oneStop & @ & 163.com $ str = implode ('-', $ email); echo $ str; // oneStopWeb-163.com?>

Demo8.php

 I [1] => will [2] => be [3] => back) $ str = 'I, will. be # back'; $ tok = strtok ($ str ,',. # '); // echo $ tok; while ($ tok) {echo $ tok.'
'; $ Tok = strtok (',. # ');} // $ str =' I will be back'; // $ tok = strtok ($ str, ''); // echo $ tok; // while ($ tok) {// echo $ tok.'
'; // $ Tok = strtok (''); //} // $ tok = strtok (''); // echo $ tok; // Iwill // the pointer is not moved down, but is returned again // $ tok = strtok ($ str, ''); // echo $ tok;?>

Demo9.php

Demo10.php

Demo11.php

Demo12.php

Demo13.php

Demo14.php

Demo15.php

Demo16.php

Demo17.php

Demo18.php

Demo19.php

Demow.php

Demo21.php

Demo22.php

I hope this article will help you with PHP programming.

For more articles on string processing techniques (conversion, filtering, parsing, searching, intercepting, replacement, etc.) in the PHP Getting Started Tutorial, please follow the PHP Chinese website!