100 lines
2.5 KiB
PHP
100 lines
2.5 KiB
PHP
<?php
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/**
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* ActivityPub implementation for WordPress/PHP functions either missing from older WordPress/PHP versions or not included by default.
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*/
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if ( ! function_exists( 'str_starts_with' ) ) {
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/**
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* Polyfill for `str_starts_with()` function added in PHP 8.0.
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*
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* Performs a case-sensitive check indicating if
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* the haystack begins with needle.
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*
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* @param string $haystack The string to search in.
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* @param string $needle The substring to search for in the `$haystack`.
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* @return bool True if `$haystack` starts with `$needle`, otherwise false.
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*/
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function str_starts_with( $haystack, $needle ) {
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if ( '' === $needle ) {
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return true;
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}
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return 0 === strpos( $haystack, $needle );
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}
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}
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if ( ! function_exists( 'get_self_link' ) ) {
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/**
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* Returns the link for the currently displayed feed.
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*
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* @return string Correct link for the atom:self element.
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*/
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function get_self_link() {
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$host = wp_parse_url( home_url() );
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$path = isset( $_SERVER['REQUEST_URI'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ) : '';
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return esc_url( apply_filters( 'self_link', set_url_scheme( 'http://' . $host['host'] . $path ) ) );
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}
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}
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if ( ! function_exists( 'is_countable' ) ) {
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/**
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* Polyfill for `is_countable()` function added in PHP 7.3.
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*
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* @param mixed $value The value to check.
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* @return bool True if `$value` is countable, otherwise false.
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*/
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function is_countable( $value ) {
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return is_array( $value ) || $value instanceof \Countable;
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}
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}
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/**
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* Polyfill for `array_is_list()` function added in PHP 7.3.
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*
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* @param array $array The array to check.
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*
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* @return bool True if `$array` is a list, otherwise false.
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*/
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if ( ! function_exists( 'array_is_list' ) ) {
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function array_is_list( $array ) {
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if ( ! is_array( $array ) ) {
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return false;
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}
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if ( array_values( $array ) === $array ) {
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return true;
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}
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$next_key = -1;
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foreach ( $array as $k => $v ) {
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if ( ++$next_key !== $k ) {
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return false;
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}
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}
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return true;
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}
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}
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if ( ! function_exists( 'str_contains' ) ) {
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/**
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* Polyfill for `str_contains()` function added in PHP 8.0.
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*
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* Performs a case-sensitive check indicating if needle is
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* contained in haystack.
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*
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* @param string $haystack The string to search in.
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* @param string $needle The substring to search for in the `$haystack`.
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*
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* @return bool True if `$needle` is in `$haystack`, otherwise false.
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*/
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function str_contains( $haystack, $needle ) {
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if ( '' === $needle ) {
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return true;
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}
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return false !== strpos( $haystack, $needle );
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}
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}
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