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WordPress Hooks Search Tool
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===========================
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<http://jesin.tk/wordpress-hooks-search-tool/>
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<?php
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/*
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WordPress hook search tool
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Jesin (http://jesin.tk)
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*/
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if( isset( $_POST ) && isset( $_POST['location'] ) ):
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header( 'Content-Type: application/json' );
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if( ! is_dir( $_POST['location'] ) && ! is_file( $_POST['location'] ) ) {
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echo json_encode( array( 'status' => 1, 'html' => '<p class="alert alert-danger" style="text-align:center;font-size:24px">The directory/file does not exist</p>' ) );
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die();
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}
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$start_time = microtime(TRUE);
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$location = ( ! empty( $_POST['location'] ) ? $_POST['location'] : '.' );
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$search_hook = ( isset( $_POST['hookname'] ) && ! empty( $_POST['hookname'] ) ) ? $_POST['hookname'] : '*';
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//Get a list for files with a .php extension
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$wp_files = ( is_dir( $location ) ? find_all_files( $location ) : array( $location ) );
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$all_hooks = Array();
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$output = '<table class="table table-hover table-bordered">
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<thead>
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<tr>
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<th>Filters</th>
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<th>Actions</th>
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</tr>
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</thead>';
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$all_filters = "";
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$all_actions = "";
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foreach( $wp_files as $wp_file )
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{
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$filters = "";
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$actions = "";
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$code = file_get_contents( $wp_file );
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//Search for actions and filters in the PHP code
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preg_match_all( "/(apply_filters|do_action|do_action_ref_array)\s*\(\s*[\'\"](.+?)\s*[,\)]/", $code, $hooks );
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$hooks[2] = str_replace( "'", "", $hooks[2] );
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$hooks[2] = str_replace( '"', "", $hooks[2] );
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if( !empty( $hooks[2] ) )
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{
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foreach ( array_unique( $hooks[2] ) as $key => $hook )
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{
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if( ( "*" == $search_hook && ( !in_array( $hook, $all_hooks ) || isset( $_POST['duplicates'] ) ) ) || ( FALSE !== strstr( $hook, $search_hook ) && ( !in_array( $hook, $all_hooks ) || isset( $_POST['duplicates'] ) ) ) )
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{
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//Segregate Actions and Filters separately
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if ( "apply_filters" == $hooks[1][ $key ] )
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$filters .= "\n\t\t\t<li>" . str_replace( $search_hook, '<span style="background-color:#EEEEEE;border:1px solid">'.$search_hook.'</span>', $hook ) . "</li>";
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elseif ( "do_action" == $hooks[1][ $key ] || "do_action_ref_array" == $hooks[1][ $key ] )
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$actions .= "\n\t\t\t<li>" . str_replace( $search_hook, '<span style="background-color:#EEEEEE;border:1px solid">'.$search_hook.'</span>', $hook ) . "</li>";
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}
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}
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if ( ! empty( $filters ) || ! empty( $actions ) )
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{
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$output.= "\n\t<tbody>
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<tr>
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<th colspan='2' style='text-align:center'>" . $wp_file . "</th>
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</tr>
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<tr>
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<td><ul>" . $filters . "\n\t\t</ul>\n\t</td>
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<td><ul>" . $actions . "\n\t\t</ul>\n\t</td>
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</tr>
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</tbody>";
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}
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$all_filters .= $filters;
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$all_actions .= $actions;
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$add_hooks[] = $hooks[2];
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$all_hooks = array_2d_to_1d( $add_hooks );
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}
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}
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$output .= "\n</table>\n";
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$end_time = microtime(TRUE);
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//Display the number of Actions and Filters
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$output = '<h2>List of WordPress hooks in <span style="color:#AA0000">' .$location . '</span></h2>
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<p style="font-size:20px;text-align:center">Actions: <strong>' . ( count( explode( '<li>', $all_actions ) ) - 1 ) . '</strong>
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<br />Filters: <strong>' . ( count( explode( '<li>', $all_filters ) ) - 1 ) . '</strong>
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<br />Scan Time: <strong>' . round( ($end_time-$start_time), 5 ) . '</strong> seconds</p>' . $output;
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echo json_encode( array( 'status' => 0, 'html' => $output ) );
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die();
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endif;
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//Function to get a list of .php files
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function find_all_files( $dir )
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{
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$root = scandir( $dir );
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foreach( $root as $value )
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{
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if( $value !== '.' && $value !== '..' )
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{
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if( is_file( "$dir/$value" ) && preg_match( '/\.php$/', $value ) )
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$result[] = "$dir/$value";
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if( is_dir( "$dir/$value" ) )
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{
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foreach( find_all_files("$dir/$value") as $value )
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{
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$result[] = $value;
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}
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}
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}
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}
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return ( isset( $result ) ? $result : Array() );
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}
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//Convert a 2 dimensional array to a single dimension
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function array_2d_to_1d( $input_array )
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{
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$output_array = array();
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for ($i = 0; $i < count($input_array); $i++)
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for ($j = 0; $j < count($input_array[$i]); $j++)
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$output_array[] = $input_array[$i][$j];
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return $output_array;
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}
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?>
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<!DOCTYPE html>
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<html>
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<head>
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<title>WordPress Hooks Search Tool</title>
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<meta charset="UTF-8" />
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<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" />
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<script type="text/javascript" src="//code.jquery.com/jquery-latest.js"></script>
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<!--[if lt IE 9]>
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<script src="//oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
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<script src="//oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script>
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<![endif]-->
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<style type="text/css">
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<!--
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html,
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body {
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height: 100%;
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}
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#wrap {
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min-height: 100%;
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height: auto;
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margin: 0 auto -60px;
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padding: 0 0 60px;
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}
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.container {
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max-width: 800px;
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}
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#footer {
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height: 60px;
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background-color: #f5f5f5;
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}
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#wrap > .container {
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padding: 60px 15px 0;
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}
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.container .text-muted {
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margin: 20px 0;
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}
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#footer > .container {
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padding-left: 15px;
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padding-right: 15px;
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}
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.x-item-disabled,
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.x-item-disabled * {
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cursor: wait
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}
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-->
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</style>
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</head>
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<body>
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<div id="wrap">
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<div class="container">
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<h1 style="text-align:center">WordPress Hooks Search Tool</h1>
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<p>This tool scans all the PHP files in a directory you specify and lists out the Actions (from <a href="http://codex.wordpress.org/Function_Reference/do_action" target="_blank">do_action</a>) and Filters (from <a href="http://codex.wordpress.org/Function_Reference/apply_filters" target="_blank">apply_filters</a>) defined in these files. To search all files and subdirectories leave the <strong>Search in</strong> field empty. You may also specify a keyword to search for in the hook name.</p>
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<form style="padding-bottom:10px;" id="search-form" role="form" method="post">
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<div id="field1" class="form-group">
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<label class="control-label" for="location">Search in: <?php echo dirname(__FILE__); ?></label>
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<input type="text" id="location" class="form-control input-lg" name="location" value="<?php echo ( isset( $_POST['location'] ) ? $_POST['location'] : '' ); ?>" />
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<p>Eg. wp-content/plugins</p>
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</div>
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<div id="field2" class="form-group">
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<label class="control-label" for="hookname">Hook Name <span style="color:#AAAAAA">(optional)</span></label>
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<input type="text" id="hookname" class="form-control input-lg" name="hookname" value="<?php echo ( isset( $_POST['hookname'] ) ? $_POST['hookname'] : '' ); ?>" />
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</div>
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<div class="checkbox">
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<label><input type="checkbox" id="duplicates" name="duplicates" <?php isset( $_POST['duplicates'] ) ? print 'checked="checked" ' : ''; ?>/> Show Duplicates</label>
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<p>If unchecked only the first occurrence of a hook is displayed.<br />Eg. The <a href="http://codex.wordpress.org/Plugin_API/Filter_Reference/the_permalink" target="_blank">the_permalink</a> filter is present in both <strong>comment-template.php</strong> and <strong>link-template.php</strong> files, unchecking this box displays only in first one.</p>
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</div>
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<button id="search-btn" type="submit" class="btn btn-primary">Search</button>
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</form>
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<div id="results"></div>
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</div>
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</div>
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<div id="footer">
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<div class="container">
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<p class="text-muted" style="text-align:center">WordPress Hooks Search Tool developed by <a target="_blank" href="http://jesin.tk">Jesin</a></p>
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</div>
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</div>
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<script type="text/javascript">
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jQuery(document).ready(function($) {
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$('#search-form').submit(function(e) {
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e.preventDefault();
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$('#search-btn').attr( 'disabled', 'disabled' );
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$('#search-btn').html( 'Searching ...' );
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var location = $('#location').val();
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var hookname = $('#hookname').val();
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if ( location.length == 0 ) {
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$('#field1').addClass( 'has-error' );
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$('#search-btn').removeAttr( 'disabled' ).text( 'Search' );
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$('#search-btn').html( 'Search' );
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return;
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}
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var postdata = {
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ajax: "true",
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location: location,
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hookname: hookname
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};
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if ( $('#duplicates').is(':checked') ) {
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$.extend( postdata, { duplicates: 1 } );
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}
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//console.log( postdata );
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$.post( '', postdata, function( data ) {
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if ( 0 == data.status ) {
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$('#field1').removeClass( 'has-error' );
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} else {
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$('#field1').addClass( 'has-error' );
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}
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$('#search-btn').removeAttr( 'disabled' );
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$('#search-btn').html( 'Search' );
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$('#results').html( data.html );
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}, 'json');
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});
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});
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</script>
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</body>
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</html>
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