本文實例講述了php中正則替換函數ereg_replace用法。分享給大家供大家參考。具體如下：
下面的實例是利用php 正則替換函數 ereg_replace來把指定的字符替換成我想需要的字符實例,代碼如下:
復制代碼代碼如下:
$num = 'www.49028c.com';
$string = "this string has four words. <br>";
$string = ereg_replace ('four', $num, $string);
echo $string;
$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;
$string ="測試用文字";
echo "**********$string**********<p>";
$string = ereg_replace ("^", "<br>", $string);
$string = ereg_replace ("$", "<br>", $string);
echo "==========$string==========";
希望本文所述對大家的正則表達式學習有所幫助。
