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var url = 'http://spring4u.info/'
window.open(url, '_blank').focus()

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<!-- "allowfullscreen" controll whether fullscreen button -->
<iframe id="video_frame" class="embed-responsive-item" src="https://www.youtube.com/embed/jS3HN7Nw-qU" allowfullscreen></iframe>

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// Stop scroll while pop up
$("body").css("overflow", "hidden")

// Reset the scroll for page
$("body").css("overflow", "")

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<?php
$text = $_POST['content'];
$lineArray = explode("<br />", nl2br($text));

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<?php

class CategoryHandler
{
    private $json = [];

    public function __construct($json_file)
    {
        try {
            $json_file_content = file_get_contents($json_file);

liuxd

if (typeof Object.create !== 'function') {
     Object.create = function (o) {
         var F = function () {};
         F.prototype = o;
         return new F();
     };
}

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#!/bin/sh
#
# Check whether there is a syntax error in the php files.

for file in `git diff --cached --name-only`;do
    if [ "${file##*.}" = "php" ];then
        output=`php -l $file`

        if [ $? -gt 0 ];then
            echo $output

liuxd

<?php
/**
 * git commit hook
 * Check whether commit message include Chinese. If there is, stop the commit.
 */
function cecho($string, $style = 'notice') {
    if (isset($_SERVER['REQUEST_URI'])){
        echo $string, "\n";
        return;
    }

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<?php
/**
 * Quick sort implementation.
 *
 * Keywords: pivot
 */
class Quicksort
{
    /**
     * Sort an array.

liuxd

<?php
/**
 * Merge Sort.
 */
class MergeSort
{
    /**
     * Let's sort it!
     */
    public function sort(array $aArray):array