Faster Way Of Checking String Length With PHP

If you want to know the length of a string in PHP you would normally turn to the strlen() function which simply tells you the length of the string.

$string = 'this is a string';


$strLength = strlen($string);

To use this to check the length of the string use the following example.

$string = 'this is a string';


if(strlen($string)


 


<p>A quicker way of looking at the length of a string would be to use the isset() function in conjunction with the curly braces {} used for locating character from a string.</p>


 


<code class="php">$string = 'this is a string';


if(!isset($string{20})){


 // stringtoo short


}</code>


 


<p>Because isset() is a language construct it works quicker than strlen() so this comparison has almost no overhead at all.</p>