In case you are using an older version of PHP, you can define and use the following function:
function endsWith($haystack, $needle) {
$length = strlen($needle);
return $length > 0 ? substr($haystack, -$length) === $needle : true;
}
(PHP 8)
str_ends_with — 检查字符串是否以指定子串结尾
haystack
在其中搜索的字符串。
needle
要在 haystack
中搜索的子串。
示例 #1 使用空字符串 ''
<?php
if (str_ends_with('abc', '')) {
echo "All strings end with the empty string";
}
?>
以上示例会输出:
All strings end with the empty string
示例 #2 展示大小写区分
<?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($string, 'Fence')) {
echo 'The string ends with "Fence"';
} else {
echo '"Fence" was not found because the case does not match';
}
?>
以上示例会输出:
The string ends with 'fence' "Fence" was not found because the case does not match
注意: 此函数可安全用于二进制对象。
In case you are using an older version of PHP, you can define and use the following function:
function endsWith($haystack, $needle) {
$length = strlen($needle);
return $length > 0 ? substr($haystack, -$length) === $needle : true;
}
In PHP7 you may want to use:
if (!function_exists('str_ends_with')) {
function str_ends_with($str, $end) {
return (@substr_compare($str, $end, -strlen($end))==0);
}
}
AFAIK that is binary safe and doesn't need additional checks.
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));
}
}
?>