PHP: Split String

How to split string and iterate in php

There are a few things wrong with your code

1. All variables must start with a $
2. $meal = explode('-', $string, 2); you use $string again instead of $item
3. With PHP you've to concatenation strings with a . not with a +
4. At the end of each line you've to place a ;

If you fix al those problems you get something like:

<?php
$string = "city-3|country-4";
$str1 = explode('|', $string, );
foreach ($str1 as $item) {
        $meal = explode('-', $item, 2);
        if ($meal[0]=="city")
        {
            echo "city duration    " . $meal[1];
        }
        else if ($meal[0]=="country")
        {
            echo "country duration   " . $meal[1];
        }
        echo "<br />";
}
?>

PHP - Split String Into Arrays for every N characters

You could do something like this:

$text = 'VERY LONG STRING';
$result = [];
$partial = [];
$len = 0;

foreach(explode(' ', $text) as $chunk) {
  $chunkLen = strlen($chunk);
  if ($len + $chunkLen > 5000) {
    $result[] = $partial;
    $partial = [];
    $len = 0;
  }
  $len += $chunkLen;
  $partial[] = $chunk;
}

if ($partial) {
    $result[] = $partial;
}

You can test it more easily if you do it with a lower max length

Split string into two

Yes, explode() and implode() are fast, reliable, and made for this sort of requirement.

Split string with only one delimiting character into key-value pairs

Try this

$string = "Part1:Part2:Part3:Part4";
$arr = explode(":", $string);

$key = "";
$i = 0;
$newArray = [];
foreach($arr as $row){
    if($i == 0){
        $key = $row;
        $i++;
    } else {
        $newArray[$key] = $row;
        $i = 0;
    }
}

echo "<pre>";
print_r($newArray);
echo "</pre>";

Split String Into Array and Append Prev Value

This solution takes the approach of starting with your input path, and then removing a path one by one, adding the remaining input to an array at each step. Then, we reverse the array as a final step to generate the output you want.

$input = "var/log/file.log";
$array = [];
while (preg_match("/\//i", $input)) {
    array_push($array, $input);
    $input = preg_replace("/\/[^\/]+$/", "", $input);
    echo $input;
}
array_push($array, $input);
$array = array_reverse($array);
print_r($array);

Array
(
    [0] => var
    [1] => var/log
    [2] => var/log/file.log
)

The above call to preg_replace strips off the final path of the input string, including the forward slash. This is repeated until there is only one final path component left. Then, we add that last component to the same array.

Split a string at comma character but ignore if said character is nested inside parentheses

You can use preg_split() method for this (documentation). You can use this to split the string based on a regex pattern for comma separated values but ignored if these are between parentheses.

This code works for your example:

<?php

$string = 'v70, 790, v50 (v40, v44), v22';
$pattern = '/,(?![^(]*\)) /';
$splitString = preg_split($pattern, $string);

Output of $splitString looks like:

array (size=4)
  0 => string 'v70' (length=3)
  1 => string '790' (length=3)
  2 => string 'v50 (v40, v44)' (length=14)
  3 => string 'v22' (length=3)

How to split a string at a specific character but not replace that character?

You can use Lookahead and Lookbehind Zero-Length Assertions.

Example:

// string
$str = "abc;def;ghi{jkl;}if('mno') {pqr;}";
// expression
$pattern = "/(?=[;{\(])/";

$result = preg_split($pattern, $str);

$result is a array like

array (
  0 => "abc",
  1 => ";def",
  2 => ";ghi",
  3 => "{jkl",
  4 => ";}if",
  5 => "('mno') ",
  6 => "{pqr",
  7 => ";}",
)

Split string into 2 letters

Here it is:

function SplitStringInWeirdWay($string, $num) {
    for ($i = 0; $i < strlen($string)-$num+1; $i++) {
        $result[] = substr($string, $i, $num);
    }
    return $result;
}

$string = "aeioubcdfghjkl";

$array = SplitStringInWeirdWay($string, 4);

echo "<pre>";
print_r($array);
echo "</pre>";

PHPFiddle Link: http://phpfiddle.org/main/code/1bvp-pyk9

And after that, you can just simply echo it in one line, like:

echo implode($array, ' ');

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