Complete PHP Array Reference

Definition and Usage

The in_array() function searches an array for a specific value.Bạn đang xem: In_array php w3schools code example

This function returns TRUE if the value is found in the array, or FALSE otherwise.

Đang xem: Hướng dẫn sử dụng hàm in_array() trong php

Syntax

in_array(search,array,type)

Parameter Description
search Required. Specifies the what to search for
array Required. Specifies the array to search
type Optional. If this parameter is set, the in_array() function searches for the search-string and specific type in the array

Tips and Notes

Note: If the search parameter is a string and the type parameter is set to TRUE, the search is case-sensitive.

Example 1

The output of the code above will be:

Match found

Example 2

“; }else { echo “Match not found”; }if (in_array(“Glenn”,$people, TRUE)) { echo “Match found”; }else { echo “Match not found”; }if (in_array(23,$people, TRUE)) { echo “Match found”; }else { echo “Match not found”; }?>

The output of the code above will be:

Match not foundMatch foundMatch found

Complete PHP Array Reference

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