ãå®ç¨çãªPHPç¨ã®æ£è¦è¡¨ç¾ï½ï¼ãã¨ããphpspotéçºæ¥èªã¨ããè¨äºã§ã 8 Practical PHP Regular Expressions â Web devlopment blogã¨ãããä»æ¥del.icio.us/popularã«åºã¦ããè¨äºã®ç´¹ä»ãããã¦ããããã®ãµã¤ãã®è¨äºã¯ãã¤ãããã ãã©ãã¯ã¦ãªããã¯ãã¼ã¯ã§ã人æ°ã§ãæ¢ã«50åãè¶ããã¦ã¼ã¶ã«ããã¯ãã¼ã¯ããã¦ããããã ã 1 ã¡ã¼ã«ã¢ãã¬ã¹ãã§ã㯠$string = "first.last@domain.co.uk"; if (preg_match( '/^[^0-9][a-zA-Z0-9_]+([.][a-zA-Z0-9_]+)*[@][a-zA-Z0-9_]+([.][a-zA-Z0-9_]+)*[.][a-zA-Z]{2,4}$/', $string)) { echo "example 3 successf
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