trim · PHP學習

**定義和用法** > trim() 函數從字符串的兩端刪除空白字符和其他預定義字符。 **語法** > trim(string,charlist) | 參數 | 描述 | |--------|--------| | string | 必需。規定要檢查的字符串。 | | charlist | 選。規定要轉換的字符串。| * "\0" - NULL * "\t" - tab * "\n" - new line * "\x0B" - 縱向列表符 * "\r" - 回車 * " " - 普通空白字符 > 例子 **例子 1** ~~~ <html> <body> <?php $str = " Hello World! "; echo "Without trim: " . $str; echo "<br />"; echo "With trim: " . trim($str); ?> <body> <html> ~~~ 輸出： ~~~ Without trim: Hello World! With trim: Hello World! ~~~ HTML 源碼： ~~~ <html> <body> Without trim: Hello World! <br />With trim: Hello World! </body> </html> ~~~ 例子 2 ~~~ <?php $str = "\r\nHello World!\r\n"; echo "Without trim: " . $str; echo "<br />"; echo "With trim: " . trim($str); ?> ~~~ 輸出： ~~~ Without trim: Hello World! With trim: Hello World! ~~~ HTML 源碼： ~~~ <html> <body> Without trim: Hello World! <br />With trim: Hello World! </body> </html> ~~~