preg_grep

Name:preg_grep

Category:Regular processing PCRE

Programming Language:php

One-line Description:Returns an array that contains only elements of the input array that match the pattern.

Definition and usage

preg_grep() function returns an array containing only elements in the input that match the given pattern.

Get items starting with "p" from the array:

 <?php
$input = [
  "Red" ,
  "Pink" ,
  "Green" ,
  "Blue" ,
  "Purple"
] ;

$result = preg_grep ( "/^p/i" , $input ) ;
print_r ( $result ) ;
?>

Try it yourself

 preg_grep ( pattern , input , flags )

parameter	describe
pattern	Required. Contains regular expressions indicating what to search for.
input	Required. String array.
flags	Elective. This function has only one flag. Passing the constant PREG_GREP_INVERT will cause the function to return only items that do not match the pattern.