w3resource

PHP: substr_count() function

Description

The substr_count() function is used to count the number of times a substring occurs in a string. Note that substring is case sensitive.

Version:

(PHP 4 and above)

Syntax:

substr_count(string1, string2, nstart, nlength)

Parameters:

Name Description Required /
Optional		 Type
string1 The string to search in. Required String
string2 The substring to search for. Required String
nstart The position where string to start searching. Optional Integer
nlength The length of the string to be searched for. Optional Integer

Return value:

Returns a number.

Value Type: Integer.

Pictorial Presentation

string_substr_count

Example: 

<?php
$string1="Welcome to w3resource.com";
echo substr_count($string1,'co'); 
echo substr_count($string1,'co',4); 
echo substr_count($string1,'co',4,4); 
?>

Output: 

2
1
0

View the example in the browser

See also

PHP Function Reference

Previous: substr_compare
Next: substr_replace



PHP: Tips of the Day

PHP: How to write to the console in PHP?

Firefox

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/

Chrome

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