Implode an associative array
PHP’s implode() function is commonly used to convert an array to a string. But what if you want to implode an associative array and you want both keys and values to be included in the string? For instance:
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// here's a fancy associative array
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$arr = array('fruit' => 'apple',
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'vegetable' => 'potato',
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'pastry' => 'bread',
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'liquid' => 'milk');
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// and we want to implode it like this
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$imploded = 'fruit: apple, vegetable: potato, pastry: bread, liquid: milk';
I wrote a simple Zend action helper for that purpose:
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class My_Controller_Action_Helper_ImplodeAssociativeArray extends Zend_Controller_Action_Helper_Abstract
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{
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public function direct($array, $separator = ': ', $glue = ', ')
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{
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// separate the associative array into keys and values
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$keys = array_keys($array);
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$values = array_values($array);
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// build a new array with joined kesy and values
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$newArray = null;
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for ($i = 0; $i < count($keys); $i++) {
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$newArray[] = $key . $separator . $value;
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}
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// implode and return the new array
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return implode($glue, $newArray);
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}
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}
To verify that it works:
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echo ($this->_helper->implodeAssociativeArray($arr) == $imploded) ? : 'yes' : 'no';
you should use “foreach ($keys as $key => $value)”