The example explains how to use the PHP function preg_grep ().

The PHP function preg_grep () We introduced to you today is one of the many powerful functions in the PHP language. I hope you will have a deep understanding of this function after reading it.

Function prototype: array preg_grep (string $ pattern, array $ input)
The PHP function preg_grep () returns an array containing the units in the $ input array that match the given $ pattern. For each element in the input array $ input, preg_grep () only matches once. The example given in code 6.3 illustrates the use of the preg_grep () function.

PHP function preg_grep () code 6.3 array query matching

 
 


  
  
<? Php

  
  
$ Subjects = array (

  
  
"Mechanical Engineering", "Medicine ",

  
  
"Social Science", "Agriculture ",

  
  
"Commercial Science", "Politics"

  
  
);

  
  
// Match the names of all subjects that contain only one word

  
  
$ Alonewords = preg_grep ("/^ [a-z] * $/I"
, $ Subjects );

  
  
?>

 
 

Through the code example of the above PHP function preg_grep (), we hope to serve readers a better impression.