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php字符串替换函数substr_replace()用法实例

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2016-06-13 09:11:361483browse

php字符串替换函数substr_replace()用法实例

 这篇文章主要介绍了php字符串替换函数substr_replace()用法,实例分析了php中substr_replace函数的使用技巧,具有一定参考借鉴价值,需要的朋友可以参考下

 

 

本文实例讲述了php字符串替换函数substr_replace()用法。分享给大家供大家参考。具体分析如下:

substr_replace用于在指定字符串中替换指定位置的子字符串

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$string = "Warning: System will shutdown in NN minutes!";

$pos = strpos($string, "NN");

print(substr_replace($string, "15", $pos, 2)."\n");

sleep(10*60);

print(substr_replace($string, "5", $pos, 2)."\n");

?>

上面代码输入如下结果

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Warning: System will shutdown in 15 minutes!

(10 minutes later)

Warning: System will shutdown in 5 minutes!

希望本文所述对大家的php程序设计有所帮助。

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