本文實例講述了php字符串替換函數substr_replace()用法。分享給大家供大家參考。具體分析如下：
substr_replace用于在指定字符串中替換指定位置的子字符串
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<?php$string = "Warning: System will shutdown in NN minutes!";$pos = strpos($string, "NN");print(substr_replace($string, "15", $pos, 2)."\n");sleep(10*60);print(substr_replace($string, "5", $pos, 2)."\n");?> |
上面代碼輸入如下結果
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Warning: System will shutdown in 15 minutes!(10 minutes later)Warning: System will shutdown in 5 minutes! |
希望本文所述對大家的php程序設計有所幫助。
