Foreach ($ stringas $ key = & gt; $ val) What is the usage? How can this problem be solved?

Foreach ($ stringas $ key = & amp; gt; $ val) What is the usage? If (is_array ($ string) & nbsp ;{& nbsp; // if it is an array, this function is executed cyclically & nbsp; & nbsp; & nbsp foreach ($ string as $ key => $ val) What is the usage?
If (is_array ($ string) {// if it is an array, this function is executed cyclically.
Foreach ($ string as $ key => $ val ){
$ String [$ key] = daddslashes ($ val, $ force );
}

Read the code analysis article of discuz and read this in the daddslashes function. traverse the array and assign a value to the key? But if I write it like this, I keep reporting errors. why? Share To: $ val) What is this usage ?] If (is_array ($ string ))? {? // If it is an array, this function is cyclically executed ???????????? Foreach ($ string? As? $ Key? =>? $ Va... 'data-pics = ''>
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You must have read reprinted articles.

> Actually>, it is estimated that the background treats it as a special html character.

Foreach ($ string as $ key => $ val)
Foreach ($ string as $ key => $ val)