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PHP preg_grep() Function

PHP preg_grep() Function

Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP preg_grep() Function.

The preg_grep() function is used to return the array consisting of the elements of the input array that matches the given pattern.

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


The following below 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.


Following is a simple example -

   $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];


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

Found food is pasta Found food is

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

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