How can I create an array assignment from HEREDOC text using PHP?

Question

I have a list of strings I need to convert into an array assignment

eg lets say I have a set of lines like this:

   ctools_export_ui_list_form
   masquerade_block_1
   switchtheme_switch_form
   backup_migrate_ui_manual_backup_load_profile_form
   backup_migrate_ui_manual_backup_form

I need to create a variable assignment like this:

$conf['journal_form_ids'] = array(
   'ctools_export_ui_list_form' => 0,
   'masquerade_block_1' => 0,
   'switchtheme_switch_form' => 0,
   'backup_migrate_ui_manual_backup_load_profile_form' => 0,
   'backup_migrate_ui_manual_backup_form' => 0,
);

My idea is to use some HEREDOC syntax:

 $str = <<<EOD
 ctools_export_ui_list_form
 masquerade_block_1
 switchtheme_switch_form
 backup_migrate_ui_manual_backup_load_profile_form
 backup_migrate_ui_manual_backup_form
EOD

and use that to create the variable assignment text and eval it, or some other suitable method.

Are there built in routines to make it elegant?

score 2 · Accepted Answer · 2015-02-14 22:41:42Z

2

not sure what HEREDOC really has to do with anything, here is my commented version:

<?php


$foo="ctools_export_ui_list_form
   masquerade_block_1
   switchtheme_switch_form
   backup_migrate_ui_manual_backup_load_profile_form
   backup_migrate_ui_manual_backup_form";

//make the array
$x=explode(PHP_EOL,$foo);
//swap the keys and values
$x=array_flip($x);
//set the value of all to 1
$x = array_fill_keys(array_keys($x), 1);
print_r($x);

edited Feb 14, 2015 at 22:41

answered Feb 14, 2015 at 22:35

user557846

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5 Comments

vfclists Over a year ago

The HEREDOC is for tidiness. I am copying and pasting the lines from a long text list in the PHP block and I want to avoid any formatting errors.

user557846 Over a year ago

$foo can be any string structure you like - same result

prodigitalson Over a year ago

To wit, you would use the HEREDOC to establish the value of $foo then the rest still applies. Still though this looks like configuration so what dont you just parse a configuration file like INI or JSON?

vfclists Over a year ago

@Dagon Thanks for a neat answer. It saved me a lot of inelegant code to construct a string for an eval

user557846 Over a year ago

can't imagine where eval() would come in to it

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