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How to resolve “must be an instance of string, string given” prior to PHP 7?
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Prior to PHP 7 type hinting can only be used to force the types of objects and arrays. Scalar types are not type-hintable. In this case an object of the class string is expected, but you're giving it a (scalar) string. The error messa...
error_log per Virtual Host?
On one Linux Server running Apache and PHP 5, we have multiple Virtual Hosts with separate log files. We cannot seem to separate the php error_log between virtual hosts.
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Fatal error: Class 'ZipArchive' not found in
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For the ZipArchive class to be present, PHP needs to have the zip extension installed.
See this page for installation instructions (both Linux and Windows).
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How can I capture the result of var_dump to a string?
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Use output buffering:
<?php
ob_start();
var_dump($someVar);
$result = ob_get_clean();
?>
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Performance of foreach, array_map with lambda and array_map with static function
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FWIW, I just did the benchmark since poster didn't do it. Running on PHP 5.3.10 + XDebug.
UPDATE 2015-01-22 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
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How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?
...I delete a directory and its entire contents (files and subdirectories) in PHP?
21 Answers
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Are PHP short tags acceptable to use?
...syntax.
I agree that <? and <?= are easier on programmers than <?php and <?php echo but it is possible to do a bulk find-and-replace as long as you use the same form each time (and don't chuck in spaces (eg: <? php or <? =)
I don't buy readability as a reason at all. Most serious...
How to loop through an associative array and get the key? [duplicate]
...do:
foreach ($arr as $key => $value) {
echo $key;
}
As described in PHP docs.
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Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
...ncountered the dreaded error-message, possibly through-painstaking effort, PHP has run out of memory:
13 Answers
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php execute a background process
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Write the process as a server-side script in whatever language (php/bash/perl/etc) is handy and then call it from the process control functions in your php script.
The function probably detects if standard io is used as the output stream and if it is then that will set the return value.....