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                # PHP wordwrap() 函數 ## 定義和用法 wordwrap() 函數按照指定長度對字符串進行折行處理。 如果成功,則返回折行后的字符串。如果失敗,則返回 false。 ### 語法 ``` wordwrap(string,width,break,cut) ``` | 參數 | 描述 | | --- | --- | | string | 必需。規定要進行折行的字符串。 | | width | 可選。規定最大行寬度。默認是 75。 | | break | 可選。規定作為分隔符使用的字符(字串斷開字符)。默認是 "\n"。 | | cut | 可選。規定是否對大約指定寬度的單詞進行折行。默認是 FALSE (no-wrap)。 | ## 例子 ### 例子 1 ``` <?php $str = "An example on a long word is: Supercalifragulistic"; echo wordwrap($str,15); ?> ``` 瀏覽器輸出: ``` An example on a long word is: Supercalifragulistic ``` HTML 源代碼: ``` <html> <body> An example on a long word is: Supercalifragulistic </body> </html> ``` ### 例子 2 ``` <?php $str = "An example on a long word is: Supercalifragulistic"; echo wordwrap($str,15,"<br />\n"); ?> ``` 輸出: ``` An example on a long word is: Supercalifragulistic ``` ### 例子 3 ``` <?php $str = "An example on a long word is: Supercalifragulistic"; echo wordwrap($str,15,"<br />\n",TRUE); ?> ``` 輸出: ``` An example on a long word is: Supercalifragul istic ```
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