PHP preg_grep() Function

Hello dear readers! welcome back to another section of my tutorial on PHP. In this tutorial guide, we will be discussing about the PHP preg_grep() Function. 

The PHP preg_grep() function returns the array consisting of the elements of the input array that matches the given pattern.

If the flag parameter is being set to PREG_GREP_INVERT, then this function returns the elements of the input array that do not match the given pattern.

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Syntax

The following is the syntax for the preg_grep() function -

array preg_grep (string $pattern,  array $input [,  int $flags] );

Return Value

• The PHP function returns an indexed array using the keys from input array.

Example

Following is a simple example -

<?php
   $foods = array("pasta", "steak", "fish", "potatoes");
   
   // find elements beginning with "p", followed by one or more letters.
   $p_foods = preg_grep("/p(\w+)/", $foods);
   
   print "Found food is " . $p_foods[0];
   print "Found food is " . $p_foods[1];
?>

Output

When the above code is executed, it will produce the following result -

Found food is pasta Found food is

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Alright guys! This is where we are rounding up for this tutorial post. In my next tutorial guide, we are going to be discussing about the PHP preg_quote() Function.

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