(PHP 8)
str_contains — Determine if a string contains a given substring
Performs a case-sensitive check indicating if needle
is contained
in haystack
.
haystack
The string to search in.
needle
The substring to search for in the haystack
.
Example #1 Using the empty string ''
<?phpif (str_contains('abc', '')) { echo "Checking the existence of the empty string will always return true";}?>
The above example will output:
Checking the existence of the empty string will always return true
Example #2 Showing case-sensitivity
<?php$string = 'The lazy fox jumped over the fence';if (str_contains($string, 'lazy')) { echo "The string 'lazy' was found in the string\n";}if (str_contains($string, 'Lazy')) { echo 'The string "Lazy" was found in the string';} else { echo '"Lazy" was not found because the case does not match';}?>
The above example will output:
The string 'lazy' was found in the string "Lazy" was not found because the case does not match
Note: This function is binary-safe.