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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ## 字符串運算符 有兩個字符串(string)運算符。第一個是連接運算符("."),它返回其左右參數連接后的字符串。第二個是 連接賦值運算符(".="),它將右邊參數附加到 左邊的參數之后。 ``` <?php $a = "Hello "; $b = $a . "World!"; // now $b contains "Hello World!" $a = "Hello "; $a .= "World!"; // now $a contains "Helllow World!" ```
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