str_ends_with
(PHP 8)
str_ends_with — 检查字符串是否以指定子串结尾
参数
haystack-
在其中搜索的字符串。
needle-
要在
haystack中搜索的子串。
示例
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($string, 'Fence')) {
echo 'The string ends with "Fence"';
} else {
echo '"Fence" was not found because the case does not match';
}
?>以上示例会输出：
The string ends with 'fence' "Fence" was not found because the case does not match
注释
注意: 此函数可安全用于二进制对象。
参见
- str_contains() - 确定字符串是否包含指定子串
- str_starts_with() - 检查字符串是否以指定子串开头
- stripos() - 查找字符串首次出现的位置（不区分大小写）
- strrpos() - 计算指定字符串在目标字符串中最后一次出现的位置
- strripos() - 计算指定字符串在目标字符串中最后一次出现的位置（不区分大小写）
- strstr() - 查找字符串的首次出现
- strpbrk() - 在字符串中查找一组字符的任何一个字符
- substr() - 返回字符串的子串
- preg_match() - 执行匹配正则表达式
＋添加备注
用户贡献的备注 3 notes
javalc6 at gmail dot com ¶
1 year ago
In case you are using an older version of PHP, you can define and use the following function:
function endsWith($haystack, $needle) {
$length = strlen($needle);
return $length > 0 ? substr($haystack, -$length) === $needle : true;
}
Reinder ¶
1 year ago
In PHP7 you may want to use:
if (!function_exists('str_ends_with')) {
function str_ends_with($str, $end) {
return (@substr_compare($str, $end, -strlen($end))==0);
}
}
AFAIK that is binary safe and doesn't need additional checks.
divinity76 at gmail dot com ¶
3 years ago
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));
}
}
?>备份地址：http://www.lvesu.com/blog/php/function.str-ends-with.php