35 行
1.1 KiB
PHP
35 行
1.1 KiB
PHP
<?php
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if (!function_exists('str_starts_with')) {
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function str_starts_with (string $haystack, string $needle): bool {
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return (string)$needle !== '' && strncmp($haystack, $needle, strlen($needle)) === 0;
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}
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}
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if (!function_exists('str_ends_with')) {
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function str_ends_with (string $haystack, string $needle): bool {
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$needle_len = strlen($needle);
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return ($needle_len === 0 || 0 === substr_compare($haystack, $needle, - $needle_len));
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}
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}
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if (!function_exists('str_contains')) {
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function str_contains (string $haystack, string $needle): bool {
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return $needle !== '' && mb_strpos($haystack, $needle) !== false;
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}
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}
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if (!function_exists('array_key_first')) {
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function array_key_first (array $array): int|string|null {
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if (!is_array($array) || empty($array)) return NULL;
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return array_keys($array)[0];
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}
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}
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if (!function_exists('array_key_last')) {
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function array_key_last (array $array): int|string|null {
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if (!is_array($array) || empty($array)) return NULL;
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return array_keys($array)[count($array)-1];
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}
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}
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?>
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