PHP str_replace()跟str_ireplace()区别与解释
PHP str_replace()和str_ireplace()区别与解释
PHP 的str_replace() 函数和str_ireplace在程序中用得是比较多的一个函数,它的主要功能是使用一个字符串替换字符串中的另一些字符,下面是它的具体使用
Str_replace函数对大小写敏感。而使用 str_ireplace() 就可以执行对大小写不敏感的搜索,其它的应该就没有什么区别了
语法
str_replace(find,replace,string,count)
find | 必需。规定要查找的值。 |
replace | 必需。规定替换 find 中的值的值。 |
string | 必需。规定被搜索的字符串。 |
count | 可选。一个变量,对替换数进行计数。 |
例子
例子 1
<?php echo DE>str_replace("world","John","Hello world!")DE>; ?>
输出:
Hello John!
例子 2
在本例中,我们将演示带有数组和 count 变量的 str_replace() 函数:
<?php $arr = array("blue","red","green","yellow"); print_r(DE>str_replace("red","pink",$arr,$i)DE>); echo "Replacements: $i"; ?>
输出:
Array ( [0] => blue [1] => pink [2] => green [3] => yellow ) Replacements: 1
例子 3
<?php $find = array("Hello","world"); $replace = array("B"); $arr = array("Hello","world","!"); print_r(DE>str_replace($find,$replace,$arr)DE>); ?>
输出:
Array ( [0] => B [1] => [2] => ! )

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