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PHP如何去掉指定字符？
在PHP中可以使用“str_replace()”函数去掉指定字符，该函数会将子字符串进行替换，其语法是“str_replace(sea,rep,sub) ”，使用时只需调用该函数将指定字符替换为空即可。
代码示例
基本范例
<?php // 赋值: <body text='black'> $bodytag = str_replace("%body%", "black", "<body text='%body%'>"); // 赋值: Hll Wrld f PHP $vowels = array("a", "e", "i", "o", "u", "A", "E", "I", "O", "U"); $onlyconsonants = str_replace($vowels, "", "Hello World of PHP"); // 赋值: You should eat pizza, beer, and ice cream every day $phrase = "You should eat fruits, vegetables, and fiber every day."; $healthy = array("fruits", "vegetables", "fiber"); $yummy = array("pizza", "beer", "ice cream"); $newphrase = str_replace($healthy, $yummy, $phrase); // 赋值: 2 $str = str_replace("ll", "", "good golly miss molly!", $count); echo $count; ?>
替换范例
<?php // 替换顺序 $str = "Line 1nLine 2rLine 3rnLine 4n"; $order = array("rn", "n", "r"); $replace = '<br />'; // 首先替换 rn 字符，因此它们不会被两次转换 $newstr = str_replace($order, $replace, $str); // 输出 F ，因为 A 被 B 替换，B 又被 C 替换，以此类推... // 由于从左到右依次替换，最终 E 被 F 替换 $search = array('A', 'B', 'C', 'D', 'E'); $replace = array('B', 'C', 'D', 'E', 'F'); $subject = 'A'; echo str_replace($search, $replace, $subject); // 输出: apearpearle pear // 由于上面提到的原因 $letters = array('a', 'p'); $fruit = array('apple', 'pear'); $text = 'a p'; $output = str_replace($letters, $fruit, $text); echo $output; ?>
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