学习:PHP中文函数

函数arsort()
描述：
以倒序的方式排列一数组但其序数则不变

void arsort (array array);

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. Example 1. arsort() example

＄fruits = array("d"=>"lemon","a"=>"orange","b"=>"banana","c"=>"apple");
arsort(＄fruits);
for(reset(＄fruits); ＄key = key(＄fruits); next(＄fruits)) {
echo "fruits[＄key] = ".＄fruits[＄key]."\n";
}

This example would display: fruits[a] = orange fruits[d] = lemon fruits[b] = banana fruits[c] = apple The fruits have been sorted in reverse alphabetical order, and the index associated with each element has been maintained.

函数asort()
描述：
顺序排列一数组且其序数不变

void asort (array array);

This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. Example 1. asort() example

＄fruits = array("d"=>"lemon","a"=>"orange","b"=>"banana","c"=>"apple");
asort(＄fruits);
for(reset(＄fruits); ＄key = key(＄fruits); next(＄fruits)) {
echo "fruits[＄key] = ".＄fruits[＄key]."\n";
}

This example would display: fruits[c] = apple fruits[b] = banana fruits[d] = lemon fruits[a] = orange The fruits have been sorted in alphabetical order

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