strlen – PHP String Functions

Syntax :

int strlen ( string );

Description :

It’s an inbuilt function of PHP. The strlen() function returns the length of a string.

Parameter :

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Name, Required /Optional, Value Type, Description

string, Required, String, String to check the length.


Output :

Returns the length of a string on success, and 0 if the string is empty.

ChangeLog :

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PHP Version, Description
5.3.0, Prior versions treated arrays as the string Array thus returning a string length of 5 and emitting an E_NOTICE level error.


Related articles : substr_count(), str_word_count().

strlen() – PHP Functions Example 1 : Return the length of the string
echo strlen("Hi from tutorialmines.");

Output of above code in the browser is as below:


strlen() – PHP Functions Example 2 : Returns 0 if the string is empty.
echo strlen("");

Output of above code in the browser is as below:


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