php常用代码片段

php-code-snippit.php

<?php
/**
 * 给一个数组,将他填充到指定长度
 * @param array $arr
 * @param number $needNumber
 * @return array
 * @author marlon marlon@tfan.net
 */
function padArray($array, $needNumber)
{
    $currentLength = count($arr);
    $result = [];

    if ($needNumber <= $currentLength) {
        return array_slice($arr, 0, $needNumber);
    }

    for ($i = 0; $i < ceil($needNumber / $currentLength); $i++) {
        $result = array_merge($result, $arr);
    }
    return array_slice($result, 0, $needNumber);
}

sortByPID.php

<?php

function generateTree($items){
    $tree = array();
    foreach($items as $item){
        if(isset($items[$item['pid']])){
            $items[$item['pid']]['son'][] = &$items[$item['id']];
        }else{
            $tree[] = &$items[$item['id']];
        }
    }
    return $tree;
}
$items = array(
    1 => array('id' => 1, 'pid' => 0, 'name' => '安徽省'),
    2 => array('id' => 2, 'pid' => 0, 'name' => '浙江省'),
    3 => array('id' => 3, 'pid' => 1, 'name' => '合肥市'),
    4 => array('id' => 4, 'pid' => 3, 'name' => '长丰县'),
    5 => array('id' => 5, 'pid' => 1, 'name' => '安庆市'),
);
print_r(generateTree($items));

ssh-connect.php

<?php

$session = ssh2_connect('your host ip', 22);
ssh2_auth_password($session, 'username', 'password');
$stream = ssh2_exec($session, 'php -i');
$errorStream = ssh2_fetch_stream($stream, SSH2_STREAM_STDERR);

// Enable blocking for both streams
stream_set_blocking($errorStream, true);
stream_set_blocking($stream, true);

// Whichever of the two below commands is listed first will receive its appropriate output.  The second command receives nothing
echo "Output: " . stream_get_contents($stream);
echo "Error: " . stream_get_contents($errorStream);

// Close the streams
fclose($errorStream);
fclose($stream);