Question

我有这么简单的代码：

    private function edit_keywords($text)
{
    $tresc = str_replace("\n","",$text);
    $tresc = str_replace("\r","",$text);
    if(strpos($text,'"')!==FALSE)
    {
        array_push($this->warnings,"Not allowed character found in keywords \".");
        return;
    }

目前这会阻止输入“我想阻止'。如何做到这一点？

替换'也没关系。

Answer 1

试试这个：

<?php

private function edit_keywords($text)
{
    $tresc = str_replace("\n","",$text);
    $tresc = str_replace("\r","",$text);

    if ((strpos($text,'"')!==FALSE)||(strpos($text,"'")!==FALSE))
    {
        array_push($this->warnings,"Not allowed character found in keywords \".");
        return;
    }

?>

Answer 2

您可以使用双引号（strpos）或通过转义单引号"'"为单引号编写第二个'\''支票。

if(strpos($text,'\'')!==FALSE)
{
    array_push($this->warnings,"Not allowed character found in keywords \".");
    return;
}

最终，您可能会达到要在数组中存储要测试的所有字符的复杂程度，并迭代它们，而不是不断添加新的if语句：

$bad_chars = array('"', '\'');

foreach ($bad_chars as $bad_char) {
  if (strpos($text, $bad_char) !== false) {
    array_push($this->warnings,"Not allowed character found in keywords \".");
    return; # or break, to stop after the first disallowed characte
  }
}

阻止在输入字段中输入“和”

2 个答案: