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Example of verifying email address with php regular expression

WBOYOriginal: 2016-07-25 08:56:381093browse

This article introduces an example of using regular expressions to verify email addresses in PHP. Friends in need can refer to it.

An example of php implementing email address verification, which uses php regular rules very well.

1, html part

<HTML>
<BODY>
<H2>php正则验证Email地址</H2>
<FORM METHOD="POST" ACTION="RegularExpressionTester.php">
<FONT FACE="Courier">
String:
<BR>
<INPUT TYPE="TEXT" NAME="string">
<BR><BR>
正则表达式:
<BR>
<INPUT TYPE="TEXT" SIZE=64 NAME="pattern" 
       VALUE="^([_a-zA-Z0-9-]+)@([a-zA-Z0-9-]+(.[a-zA-Z0-9-]+)*)$">
<BR><BR>
<BR>
<INPUT TYPE="SUBMIT">
</FONT>
</FORM>
</BODY>
</HTML>

2, php code part RegularExpressionTester.php

<?php
echo "<BR><B>string:</B>$string";
echo "<BR><B>regular expression:</B> $pattern";
if (get_magic_quotes_gpc()){
    echo "<BR><BR>";
    echo "<BR>Stripping magic quotes....";
    $string = stripslashes($string);
    $pattern = stripslashes($pattern);
    echo "<BR><B>string:</B> $string";
    echo "<BR><B>regular expression:</B> $pattern";
}
$found = ereg($pattern, $string, $matches);
echo "<BR><BR>";
if ($found)
{
    echo "<BR><B>验证:</B> 成功";
    echo "<BR><BR>";
    echo "<BR><B>Components:&nbsp</B>";
    for ($i = 0; $i < count($matches); $i++)
    {
        echo "<BR>$matches[$i]";
    }
}
else
    echo "<BR><B>验证:</B> 失败";
?>

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Example of verifying email address with php regular expression

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