48 lines
1.0 KiB
PHP
48 lines
1.0 KiB
PHP
<?php
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namespace W3TC;
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class UserExperience_LazyLoad_Mutator_Unmutable {
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private $placeholders = array();
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private $placeholder_base = '';
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public function __construct() {
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$this->placeholder_base = 'w3tc_lazyload_' .
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md5( isset( $_SERVER['REQUEST_TIME'] ) ? sanitize_text_field( wp_unslash( $_SERVER['REQUEST_TIME'] ) ) : '' ) . '_';
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}
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public function remove_unmutable( $buffer ) {
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// scripts
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$buffer = preg_replace_callback(
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'~<script(\b[^>]*)>(.*?)</script>~is',
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array( $this, 'placeholder' ), $buffer );
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// styles
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$buffer = preg_replace_callback(
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'~\s*<style(\b[^>]*)>(.*?)</style>~is',
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array($this, 'placeholder'), $buffer);
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return $buffer;
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}
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public function restore_unmutable( $buffer ) {
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return str_replace(
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array_keys( $this->placeholders ),
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array_values( $this->placeholders ),
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$buffer
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);
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}
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public function placeholder( $matches ) {
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$key = '{' .$this->placeholder_base . count( $this->placeholders ) . '}';
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$this->placeholders[$key] = $matches[0];
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return $key;
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}
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}
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