，PHP替換指定位置的字符串
Jun 13, 2016 pm 12:14 PM
在線等，急。PHP替換指定位置的字符串
$a?=?'36,0.00,0.00,100|37,0.00,0.00,100|38,0.00,0.00,100|39,0.00,0.00,100';
$b='38';
$c='85';
用PHP怎么做一替換。。。?
就是說?當(dāng)$a中?包含$b中的字?jǐn)?shù)后。?把38，0.00，0.00，100?中的100替換成$c中的數(shù)字。
如果$b=‘37’
那么就把37，0.00，0.00，100?中的100替換成$c中的數(shù)字。
謝謝各位了
------解決思路----------------------
php5.3+?通過
$a = '36,0.00,0.00,100<br><font color='#FF8000'>------解決思路----------------------</font><br>37,0.00,0.00,100<br><font color='#FF8000'>------解決思路----------------------</font><br>38,0.00,0.00,100<br><font color='#FF8000'>------解決思路----------------------</font><br>39,0.00,0.00,100';<br />$b='38';<br />$c='85';<br /><br />echo preg_replace_callback("/(^<br><font color='#FF8000'>------解決思路----------------------</font><br>\<br><font color='#FF8000'>------解決思路----------------------</font><br>$b,0.00,0.00,)100/", function($m) use ($c){ return $m[1].$c;}, $a);36,0.00,0.00,100------解決思路----------------------
37,0.00,0.00,100
------解決思路----------------------
38,0.00,0.00,85
------解決思路----------------------
39,0.00,0.00,100
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