(PHP 8)
str_ends_with — Checks if a string ends with a given substring
$haystack
, string $needle
) : bool
Performs a case-sensitive check indicating if
haystack ends with needle.
haystackThe string to search in.
needle
The substring to search for in the haystack.
Returns true if haystack ends with
needle, false otherwise.
Example #1 Using the empty string ''
<?php
if (str_ends_with('abc', '')) {
echo "All strings end with the empty string";
}
?>
以上例程会输出：
All strings end with the empty string
Example #2 Showing case-sensitivity
<?php
$string = 'The lazy fox jumped over the fence';
if (str_ends_with($string, 'fence')) {
echo "The string ends with 'fence'\n";
}
if (str_ends_with($string, 'Fence')) {
echo 'The string ends with "fence"';
} else {
echo '"fence" was not found because the case does not match';
}
?>
以上例程会输出：
The string ends with 'fence' "fence" was not found because the case does not match
Note: 此函数可安全用于二进制对象。
this is the fastest php7-implementation i can think of, it should be faster than javalc6 and Reinder's implementations, as this one doesn't create new strings (but theirs does)
<?php
if (! function_exists('str_ends_with')) {
function str_ends_with(string $haystack, string $needle): bool
{
$needle_len = strlen($needle);
return ($needle_len === 0 || 0 === substr_compare($haystack, $needle, - $needle_len));
}
}
?>
In PHP7 you may want to use:
if (!function_exists('str_ends_with')) {
function str_ends_with($str, $end) {
return (@substr_compare($str, $end, -strlen($end))==0);
}
}
AFAIK that is binary safe and doesn't need additional checks.
In case you are using an older version of PHP (e.g. PHP 7), you can define and use the following function:
function endsWith($haystack, $needle) {
$length = strlen($needle);
return $length > 0 ? substr($haystack, -$length) === $needle : true;
}