PHP如何去掉最后一個字符？

在PHP中可以使用“rtrim()”函數(shù)去掉最后一個字符，該函數(shù)用于刪除字符串末端的空白字符或者其它字符，其語法是“rtrim(str,char) ”，其參數(shù)str表示要操作的字符串，參數(shù)char表示要去除的字符。

使用范例

<?php $text = "ttThese are a few words :) ...  "; $binary = "x09Example stringx0A"; $hello  = "Hello World"; var_dump($text, $binary, $hello); print "n"; $trimmed = rtrim($text); var_dump($trimmed); $trimmed = rtrim($text, " t."); var_dump($trimmed); $trimmed = rtrim($hello, "Hdle"); var_dump($trimmed); // 刪除 $binary 末端的 ASCII 碼控制字符 // (包括 0 - 31) $clean = rtrim($binary, "x00..x1F"); var_dump($clean); ?>

以上例程會輸出：

string(32) "        These are a few words :) ...  " string(16) "    Example string " string(11) "Hello World" string(30) "        These are a few words :) ..." string(26) "        These are a few words :)" string(9) "Hello Wor" string(15) "    Example string"

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