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忘れてしまうPHPのデバッグ方法

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定番のvar_dump

echo "<pre>";
var_dump($array);
echo "</pre>";

説明
1. var_dumpをそのまま実行すると成形されずにブラウザで表示されるため、preタグで挟んであげると綺麗に出力される

エラーログをコードに仕込んで任意のファイルに出力

error_log(print_r($array,true),"3","C:/xampp/log/debug.log");

説明
1. errer_log関数の第1引数に出力したい変数/文字列を入れる。
2. print_rの第2引数のtrueを渡してあげると配列が展開されてログに出力される。
3. error_log関数の第2引数に設定している”3”は任意のファイルに出力ということ
4. error_log関数の第3引数に設定しているパスは出力したい任意のファイルパスを入れること

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