str_contains
Determine if a string contains a given substring
Description
bool str_contains(string $haystack, string $needle)
Parameters
-
haystack
-
The string to search in.
-
needle
-
The substring to search for in the haystack.
Return Values
Returns true if needle is in
haystack, false otherwise.
Examples
Example #1 Using the empty string ''
<?php
if (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
Notes
Note: This function is
binary-safe.
See Also
- str_ends_with
- str_starts_with
- stripos
- strrpos
- strripos
- strstr
- strpbrk
- substr
- preg_match