Changing is_null($x) to null === $x or !is_null($x) to null !== $x in PHP files

Here is a script that can perform the change of is_null($x) to null === $x (and the negation).

    
          #!/bin/bash
 
# Assume we look in tmp
 
# For is_null
find tmp/ -type f -name "*.php" -exec sed -i -r 's#\([^\!]\)is_null\s*(\([^()]*\))#\1\2 === null#g' {} \;
 
# For !is_null
find tmp/ -type f -name "*.php" -exec sed -i -r 's#[\!]is_null\s*(\([^()]*\))#\1 !== null#g' {} \;

          view raw
          is_null.sh
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Note I am not the original author of this script, however, I do not have the original source.

Note: this is a micro-optimisation, however, it does enable for nicer code in any case.

Jonathan Ingram

Software Engineer

Changing is_null($x) to null === $x or !is_null($x) to null !== $x in PHP files

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