[請益] 搜尋字串變數裡的字
假設 $desc="你好,我是風之痕";
想要找出$desc裡面有沒有"風"這個字,以及它在字串裡的第幾個位置
該用什麼函式才好
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08/28 14:45, , 1F
08/28 14:45, 1F
推
08/28 15:02, , 2F
08/28 15:02, 2F
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08/28 15:21, , 3F
08/28 15:21, 3F
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08/28 16:37, , 4F
08/28 16:37, 4F
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08/28 17:56, , 5F
08/28 17:56, 5F
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08/28 18:13, , 6F
08/28 18:13, 6F
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08/28 18:18, , 7F
08/28 18:18, 7F
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08/28 18:19, , 8F
08/28 18:19, 8F
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08/28 18:19, , 9F
08/28 18:19, 9F
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08/30 17:38, , 10F
08/30 17:38, 10F