You can use the strpos function which is used to find the occurrence of one string inside other
Find the numeric position of the first occurrence of
The string to search in.
If
If specified, search will start this number of characters counted from the beginning of the string. If the offset is negative, the search will start this number of characters counted from the end of the string.
Warning
strpos() :
strpos() function — Find the position of the first occurrence of a substring in a different string It's support (PHP 4, PHP 5, PHP 7).
Syntax :
Find the numeric position of the first occurrence of
needle in the haystack string.Parameters :
haystack needle needle is not a string, it is converted to an integer and applied as the ordinal value of a character. offset Output :
Returns the position of where the needle exists relative to the beginning of the
haystack string (independent of offset). Also note that string positions start at 0, and not 1.
Returns
FALSE if the needle was not found.
This function may return Boolean
FALSE, but may also return a non-Boolean value which evaluates to FALSE. Please read the section on Booleans for more information. Use the === operator for testing the return value of this function.Examples :
Example #1 Using !==
<?php $a = 'How are you all?'; if (strpos($a, 'all') !== false) { echo 'true'; } ?>
Example #2 Using an offset
<?php// We can search for the character, ignoring anything before the offset$newstring = 'abcdef abcdef';$pos = strpos($newstring, 'a', 1); // $pos = 7, not 0?>
source: php.net
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