PHP basic learning: PHP arrays and data structures

In the process of learning PHP, you will encounter many problems such as arrays and data structures. This article will explain the relevant knowledge.

<?php 
// //     $arr = array(&#39;欢迎&#39;,10 => &#39;学习&#39;, 
// //         &#39;php&#39;, 
// //         19 => &#39;语言&#39;,&#39;相信自己一定能学会&#39; 
// //     ); 
       
// //     $arr = array(&#39;刘亦菲&#39;, 
// //         &#39;anglebaby&#39;,&#39;鹿晗&#39;,&#39;范彬彬&#39; 
// //     ); 
       
//     $arr[0] = &#39;北京&#39;; 
//     $arr[1] = &#39;上海&#39;; 
//     $arr[2] = &#39;广州&#39;; 
   
//     $arr = array(&#39;0&#39; => &#39;小明&#39;, 
//         &#39;1&#39; => &#39;小龙&#39;, 
//         &#39;2&#39; => &#39;小花&#39;, 
//         &#39;3&#39; => &#39;小兰&#39; 
//     ); 
       
//     $arr = [ 
//         [&#39;南宁&#39;,&#39;崇左&#39;,&#39;凭祥&#39;,&#39;桂林&#39;,&#39;百色&#39;], 
//         [&#39;龙州&#39;,&#39;武鸣&#39;,&#39;宁明&#39;,&#39;大兴&#39;,&#39;苹果&#39;] 
//     ]; 
       
//     $arr = array( 
//         array(&#39;南宁&#39;,&#39;崇左&#39;,&#39;凭祥&#39;,&#39;桂林&#39;,&#39;百色&#39;), 
//         array(&#39;龙州&#39;,&#39;武鸣&#39;,&#39;宁明&#39;,&#39;大兴&#39;,&#39;苹果&#39;) 
//     ); 
       
//     echo &#39;<pre class="brush:php;toolbar:false">&#39;; 
//     echo count($arr);die; 
//     var_dump($arr[2]); 
//     echo &#39;

'; ?> '; } unset($num[1]); var_dump($num); $name = array( 'name1' => '芙蓉', 'name2' => '凤姐' ); foreach ($name as $key => $value){ echo $key.'——————'.$value.'
'; } $city = array( 0 => array( '南宁' => 'nanning', '百色' => 'baise', '凭祥' => 'pingxing' ), 1 => array( '广州' => 'guangzou', '深圳' => 'shengzheng', '东莞' => 'dongguan' ) ); foreach ($city as $value){ foreach ($value as $k => $v){ echo $k.'—'.$v.'
'; } } list($one,$two,$three) = array('张三','李四','王五'); echo '$one----'.$one.'
'; echo '$two----'.$two.'
'; echo '$three--'.$three.'
'; $kongjie = [ 'gao' => '黑丝', 'lian' => '很白', 'tui' => '很细', 'wuguan' => '精致', 'shengyin' => '甜美', ]; $date = each($kongjie); echo '

'; 
    var_dump($date); 
    echo &#39;<pre class="brush:php;toolbar:false">&#39;; 
    list($one,$two) = each($kongjie); 
    echo $one.&#39;-&#39;.$two.&#39;<br />&#39;; 
       
    $minggren = array("邓超","黄晓明","泞泽涛","钟汉良"); 
    $dc = array_shift($minggren); 
    array_unshift($array, $value1); 
    array_push($array, $value1); 
    array_pop($array); 
    current($array); 
    key($array); 
    next($array); 
    prev($array); 
    reset($array); 
    end($array); 
    print_r($minggren); 
       
    //php数组常用函数 
    array_combine($keys, $values); 
    range($start, $end); 
    compact($varname1); 
    array_fill($start_index, $num, $value); 
    array_chunk($array, $size); 
    array_merge($array1); 
    array_slice($array, $offset); 
    array_diff($array1, $array2); 
    array_search($needle, $haystack); 
    array_splice($input, $offset); 
    array_sum($array); 
    in_array($needle, $haystack); 
    array_key_exists($key, $array); 
    shuffle($array); 
    count($array_or_countable); 
    array_flip($array); 
    array_keys($array); 
    array_values($array); 
    array_reverse($array); 
    array_count_values($array); 
    array_rand($array); 
    array_unique($array); 
    sort($array); 
    rsort($array); 
    asort($array); 
    arsort($array); 
    asort($array); 
    arsort($array); 
    ksort($array); 
    krsort($array); 
    natsort($array); 
    natcasesort($array); 
    array_filter($array); 
    extract($array);  
?>

This video explains the relevant knowledge of PHP arrays and data structures. For more related knowledge, please pay attention to the PHP Chinese website .

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