[SOLVED] How to check if a string contains certain characters using an array in php

Issue

I need to check if a string contains illegal character and I was wondering if there is a way to do it through an array because I have an array character that are allowed. This is in PHP

The array just in case you want to see it:

$MsgAry1 = array("A","B","C","D","E","F","G","H","I","J",
           "K","L","M","N","O","P","Q","R","S","T",
           "U","V","W","X","Y","Z","a","b","c","d",
           "e","f","g","h","i","j","k","l","m","n",
           "o","p","q","r","s","t","u","v","w","x",
           "y","z","1","2","3","4","5","6","7","8",
           "9","0",".",",","'","?","!"," ","_","-");

Thanks for any help.

Solution

You can use the str_split and in_array functions to do this, as thus:

$MsgAry1 = array("A","B","C"); //Add your actual array here
$testCase = "Hello, World!";
$testCase_arr = str_split($testCase);

foreach($testCase as $test)
{
    if(!in_array($test, $MsgAry1))
    {
        echo "Error! Invalid Character!";
        break(); //Or exit();, as needed
    }
}

Answered By – Acharya Anurag

Answer Checked By – Mildred Charles (BugsFixing Admin)