php-5.3

I'm starting to use functional programming paradigms in php and was wondering what the performance impacts are. Some googling just seems to say that there are some. To be specific, I would like to know: Is there actually a performance impact or is it an urban legend? What is the performance impact (hopefully someone out that has done benchmarks)? What causes this impact (if one exists)? Is it fixed cost, or per execution? Any resources you guys have would be greatly appreciated :) Thanks in advance Jory Geerts I did some testing with array_map(), calling it with: The name of a function ( array

I've seen a solution for not having to rework usage of the ereg function for PHP 5.3: Good alternative to eregi() in PHP It uses if(!function_exists.... Is there a function that can be used in this way for ereg_replace ? ereg_replace("<!--.*-->","",$str); ereg_replace("[^a-z,A-Z]", "", $str); Use the PCRE function preg_replace instead: preg_replace("/<!--.*-->/", "", $str); preg_replace("/[^a-z,A-Z]/", "", $str); POSIX ERE is (nearly) a complete subset of PCRE. So you can use (nearly) any POSIX ERE regular expression with a PREG implementation. See the Regular Expression Flavor Comparison for

I'm writing a library in PHP 5.3, the bulk of which is a class with several static properties that is extended from by subclasses to allow zero-conf for child classes. Anyway, here's a sample to illustrate the peculiarity I have found: <?php class A { protected static $a; public static function out() { var_dump(static::$a); } public static function setup($v) { static::$a =& $v; } } class B extends A {} class C extends A {} A::setup('A'); A::out(); // 'A' B::out(); // null C::out(); // null B::setup('B'); A::out(); // 'A' B::out(); // 'B' C::out(); // null C::setup('C'); A::out(); // 'A' B::out

In the following code the callback function passed to wrap_map can't see the argument in the outer function, why? (see code comment for detail) public static function wrap_implode($ar, $wrap, $delim){ echo "wrap is $wrap"; //wrap is ok $res = array_map(function($val){ echo "wrap is $wrap"; //wrap is not set here! return $wrap. $val . $wrap; }, $ar); return implode($delim, $res); } Because it is in another scope. If you want to use $wrap , try: function($val) use ($wrap){ //etc } Of course, your function here doesn't need a callback: return $wrap.implode($wrap.$delim.$wrap,$ar).$wrap; 来源： https

Im trying to create a custom HTML 5 date field for using in a laravel 4 framework view. {{ Form::macro('datetime', function($field_name) { return ''; }); }} {{ Form::label('event_start', 'Event Date', array('class' => 'control-label')) }} {{ Form::datetime('event_start') }} The only problem is the value is not being populated, and i do not know how to do this. Im using this form to create and edit a model called Event. how can i populate the value of this field? Here's what I did: in my view I added the following macro <?php Form::macro('datetime', function($value) { return '<input type=

This question already has an answer here: Warning: preg_replace(): Unknown modifier ']' 3 answers I change ereg to preg_match for update mycode to PHP5.3 . now i see this warning in my page. how to fix this ? warning : Warning: preg_match() [function.preg-match]: Unknown modifier '-' in C:\xampp\htdocs\share\configs\functions.php on line 2645 old Code : if (!ereg ("([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})", $dateOfBirth, $regs)) New Code (PHP 5.3): if (!preg_match ("([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})", $dateOfBirth, $regs)) Thanks You need to add delimiters : if (!preg_match ("/([0-9]{4})-([0-9]

I often have a 2-dimensional array: array( array('key' => 'value1'), array('key' => 'value2'), ... ); And need to form a 1-dimensional array: array('value1', 'value2') This can easily be done with foreach, but I wonder if there's some php 5.3 way to do it in one line. $new_array = array_map(function($el) { return $el['key']; }, $array); <?php $arr = array(array(141,151,161,140),2,3,array(101,202,array(303,404),407)); function array_oned($arrays){ static $temp_array = array(); foreach($arrays as $key){ if(is_array($key)){ array_oned($key); }else { $temp_array [] = $key; } } return $temp_array;