PHP advanced programming skills in Linux are all provided (continued)-Linux general technology-Linux programming and kernel information. The following is a detailed description.
5. Rich Array Functions
PHP 4.0 adds 30 new functions related to the number of groups. Some common functions can determine whether an array contains an element and count the elements in an array, add or delete elements in the array or sort the elements in the array.
If there is a large array and you need to find out whether it contains a specific element, you can use in_array (). The following example shows "Not found in this array", because Albert is searched in an array named $ namesArray, and such an element does Not exist in the $ namesArray array.
CODE: $ LookingFor = "Albert ";
If (in_array ($ lookingFor, $ namesArray )){
Echo "You 've got it! ";
} Else {
Echo "Not found in this array! ";
}
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