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说明中的第一个特性
原标题:Identify first character in a string
  • 时间:2012-05-01 06:19:17
  •  标签:
  • php
  • string

Hello I需要帮助确定扼杀的第一个特征。 如果扼杀含有前方斜线“/”或未在实验室内产生前方斜线。

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最佳回答

引言

function getSlashes($str)
    {
        return $str[0] ==   /  || $str[0] ==   \ ;
    }
问题回答

Try this code:

<?php
function containSlash($str)
{
  return substr($str, 0, 1) == "/";
}

// TEST
echo (containSlash("/hello") ? "TRUE" : "FALSE"); // TRUE
echo (containSlash("hello") ? "TRUE" : "FALSE"); // FALSE
?>

你在此再次提出两个不同的问题。

您可以审查使用方言的第一项特性。

$str[0]

可以通过使用<条码>/来检查舱面是否包含任何<条码>。

strpos($str,  / ) === FALSE




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