![]() ![]() You can improve that code by using and checking against $offset + $first_key. For numeric keys the keys are reset, while literal keys are left untouched. You can also use a loop and use array_shift to remove the first element of the array repeatedly. array_splice($elements, 0, $offset) Īgain, no loop required. It returns the deleted elements and the original array has a few less elements. You can use array_splice to modify an array in-place by deleting a consecutive chunk of array elements. There is no Unicode-specific trim function in PHP at the time of writing (July 2023), but you can try some examples of trims using multibyte strings posted on the comments. $elements = array_slice($elements, $offset) Note that trim() is not aware of Unicode points that represent whitespace (e.g., in the General Punctuation block), except, of course, for the ones mentioned in this page. In php you can use array_slice to obtain a new array with only a slice of the original array. Since you use a for-loop, I can assume you use an array with numeric keys, which makes it odd that you would want to keep the current keys. Modifying arrays while looping over them is aweful in any language, as you need to be mindful that conditions in loops may be pre-calculated, and element pointers may skip elements. Your current code modifies an array in-place while keeping the keys. You would expect it to remove the first 3 elements twice, but because the keys are not reset, the second iteration of your code will try to remove key 0, 1 and 2, while the first key is 3. Learn more about bidirectional Unicode characters. To review, open the file in an editor that reveals hidden Unicode characters. $elements = įor ($i=0 ($i int(3) => int(4) => int(5) => int(6) => int(7) => int(8) => int(9) => int(10) => int(11) => int(12) => int(13) } trimmer.php This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. Considering the following code: $offset = 3 Your current code only works once, because you keep the keys. You currently use $offset- but do not use the result. This increases readability, and thus decreases the chance for bugs. Make sure to keep whitespace around your operators, even in a for-loop. trim () - Removes whitespace or other predefined characters from both sides of a string. Since striptags does not remove attributes and thus creates a potential XSS security hole, here is a small function I wrote to allow only specific tags with specific attributes and strip all other tags and attributes.If you only allow formatting tags such as b, i, and p, and. Related functions: rtrim () - Removes whitespace or other predefined characters from the right side of a string. In particular $max1 and $max2 use a poor naming style as it is unclear what you expect them to contain. The ltrim () function removes whitespace or other predefined characters from the left side of a string. Make sure that your variable names are descriptive of what they contain.
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