PHP: strcspn() function


The strcspn() function is used to get the number of characters that occur between the start of the main string and the first occurrence of any character listed in the second string.


(PHP 4 and above)


strcspn(main_string, second_string, start_position, string_length)


Name Description Required /
main_string The initial string. Required String
second_string The second string whose characters will be checked. Required String
start_position Starting position of the string to examine. Optional Integer
string_length Length of the string to examine. Optional Integer

Return value:

The length of the segment.

Value Type: Integer.

Pictorial Presentation



echo strcspn('W3resource.com', '.');



View the example in the browser

See also

PHP Function Reference

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PHP: Tips of the Day

PHP: How to write to the console in PHP?


On Firefox you can use an extension called FirePHP which enables the logging and dumping of information from your PHP applications to the console. This is an addon to the awesome web development extension Firebug.

  • http://www.studytrails.com/blog/using-firephp-in-firefox-to-debug-php/


However if you are using Chrome there is a PHP debugging tool called Chrome Logger or webug (webug has problems with the order of logs).

More recently Clockwork is in active development which extends the Developer Tools by adding a new panel to provide useful debugging and profiling information. It provides out of the box support for Laravel 4 and Slim 2 and support can be added via its extensible API.

Using Xdebug

A better way to debug your PHP would be via Xdebug. Most browsers provide helper extensions to help you pass the required cookie/query string to initialize the debugging process.

  • Chrome - Xdebug Helper
  • Firefox - The easiest Xdebug
  • Opera - Xdebug
  • Safari - Xdebug Toggler

Ref : https://bit.ly/3ck9rFg