php中正则替换函数ereg_replace用法实例

本文实例讲述了php中正则替换函数ereg_replace用法。分享给大家供大家参考。具体如下:

下面的实例是利用php 正则替换函数 ereg_replace来把指定的字符替换成我想需要的字符实例,代码如下:

代码如下:

$num = 'www.jb51.net'; 

$string = "this string has four words. <br>"; 

$string = ereg_replace ('four', $num, $string); 

echo $string;

$num = '49'; 

$string = "this string has four words"; 

$string = ereg_replace ('four', $num, $string); 

echo $string;


$string ="测试用文字"; 

echo "**********$string**********<p>"; 

$string = ereg_replace ("^", "<br>", $string); 

$string = ereg_replace ("$", "<br>", $string); 

echo "==========$string==========";

希望本文所述对大家的正则表达式学习有所帮助。

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