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26 sty 2011 · You need to use a different variable to store each element of the array and hold the concatenated values. Otherwise, when the loop exists, $i will always be the last value of the array, duplicated. Finally, you should always declare your variables before attempting to read from them, which is implied by all the shorthand ( += , .= , *= ,etc ...
28 lut 2011 · in classes, you can only declare variables that consist of a static value, and not a dynamic value such as "name" . $name. What you would have to do is concat in the constructor, (That's why its there): class A. {. public $name = 'Mark'; public $entry = array(. 'title' => 'Some title', 'message' => 'Hi %s'. );
As of PHP 8.0, array_combine throws ValueError if the number of elements for each array is not equal; To be on a safer side, you can perform a check instead. $arrayk = array( 'key1', 'key2', 'key3' ); $arrayv = array( 'v1', 'v2', 'v3' ); if ( count( $arrayk ) === count( $arrayv ) ) {.
String Concatenation. To concatenate, or combine, two strings you can use the . operator: Example. $x = "Hello"; $y = "World"; $z = $x . $y; echo $z; Try it Yourself » The result of the example above is HelloWorld, without a space between the two words. You can add a space character like this: Example.
In this PHP 7 tutorial, we are going to learn how to concatenate String, Variable and Arrays in PHP. The concatenate term in PHP refers to joining multiple strings into one string; it also joins variables as well as the arrays. In PHP, concatenation is done by using the concatenation operator (".
Use the + operator or array_replace, this will preserve - somewhat - the keys: <?php $result1 = array_replace ($test1, $test2); var_dump ($result1); $result2 = $test1 + $test2; var_dump ($result2);?> You will get both: array(4) {[24]=> string(4) "Mary" [17]=> string(4) "John" [67]=> string(4) "Phil" [33]=> string(7) "Brandon"}
You can use the + operator to merge two arrays in a way that the values of the first array never get overwritten, but it does not renumber numeric indexes, so you lose values of arrays that have an index that is also used in the first array.
