Public-Method.md

Public-Method

常用方法

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explode(',', $res)将字符串转换成一维数组

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implode(',', $res)将一维数组转换成字符串

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array_filter($res)过滤空的一维数组

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array_values($res)重置键名

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//将一维数组转换成二维数组

$test_three = array();

foreach ($test_two as $k => $v) {

$test_three[] = array('img' => $v);

}

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//二维数组转一维

$user_array = array();

foreach ($user as $k => $v) {

 $user_array[] = $v['id'];

}

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unset($user[$k]);//抛出数组中不需要的

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/**

• 获取PDF的页数 */

function getPageTotal($path){ // 打开文件 if (!$fp = @fopen($path,"r")) { $error = "打开文件{$path}失败"; return false; } else { $max=0; while(!feof($fp)) { $line = fgets($fp,255); if (preg_match('//Count [0-9]+/', $line, $matches)){ preg_match('/[0-9]+/',$matches[0], $matches2); if ($max<$matches2[0]) $max=$matches2[0]; } } fclose($fp); // 返回页数 return $max; } }