将尾部斜杠添加到preg中的所有特殊字符 - adding trailing slash to all special characters in preg

adding trailing slash to all special characters in preg

本文关键字：特殊字符 preg 尾部添加 | 更新日期: 2023-09-27

我想为所有preg特殊字符添加尾部斜杠。。例如，http://www.youtube.com/watch?v=i9c4PJTDljM应转换为http':'/'/www'.youtube'.com'/watch'?v'=i9c4PJTDljM

我尝试了低于代码

echo preg_quote($url);

但它并没有在反斜杠中添加尾随斜杠。结果是这样的

http'://www'.youtube'.com/watch'?v'=i9c4PJTDljM

<?php
$content = 'http://www.youtube.com/watch?v=i9c4PJTDljM';
//With this pattern you found everything except 0-9a-zA-Z
$pattern = "/[_a-z0-9-]/i";
$new_content = '';
for($i = 0; $i < strlen($content); $i++) {
    //if you found the 'special character' then add the '
    if(!preg_match($pattern, $content[$i])) {
        $new_content .= '''' . $content[$i];
    } else {    
        //if there is no 'special character' then use the character
        $new_content .= $content[$i];
    }   
}   
print_r($new_content);
?>

输出：

http://www.youtube.com/watch''？v''=i9c4PJTDlj